Bobby Brown Extra Treatment Lotion
Bobby Brown

Extra Treatment Lotion

A preparative lotion that you apply first before your skincare routine to maximize skin's moisture for fresher, smoother, firmer skin.
Uploaded by: rachelbicknell on 08/09/2018

Ingredients overview

Water\Aqua\Eau
what‑it‑does solvent
Normal (well kind of - it's purified and deionized) water. Usually the main solvent in cosmetic products. [more]
,
Methyl Gluceth-20
what‑it‑does moisturizer/humectant
A corn sugar-derived, water-soluble, pale yellow syrup, that nicely moisturizes the skin. It has a light and smooth skin feel. [more]
,
Bis-Peg-18 Methyl Ether Dimethyl Silane
what‑it‑does emollient | moisturizer/humectant
A type of silicone that makes the skin smooth and nice (emollient), moisturizes and helps to reduce the tackiness of the products. [more]
,
Glycerin
what‑it‑does skin-identical ingredient | moisturizer/humectant
irritancy, com. 0 0
A real oldie but a goodie. Great natural moisturizer and skin-identical ingredient that plays an important role in skin hydration and general skin health. [more]
,
Sucrose
what‑it‑does soothing | moisturizer/humectant
A type fo sugar, usually refined from cane or beet sugar. On the skin, it is water-binding properties and helps to keep your skin hydrated.
,
Glycereth-26
what‑it‑does moisturizer/humectant | emollient | viscosity controlling
It's a nice glycerin-based humectant and emollient that gives skin a smooth and luxurious feel.
,
Pelargonium Graveolens (Geranium) Flower Oil
what‑it‑does perfuming
The essential oil coming from the flowers of Rose Geranium. Like most essential oils, it contains antioxidant and antimicrobial components, but the main ones are fragrant constituents. [more]
,
Citrus Aurantium Amara (Bitter Orange) Oil
The essential oil coming from the flowers of bitter orange. Contains fragrant components that give it a nice sweet smell. [more]
,
Citrus Grandis (Grapefruit) Peel Oil
what‑it‑does perfuming
The essential oil coming from the rind of the grapefruit. Its main component (86-95%) is limonene, the super common fragrant ingredient. [more]
, [more]
Rosmarinus Officinalis (Rosemary)
what‑it‑does antimicrobial/antibacterial
,
Anthemis Nobilis (Chamomile)
what‑it‑does soothing
Roman Chamomile - thanks to its phenolic compound had some nice soothing and skin toning properties. It contains less anti-inflammatory actives than the German Chamomile. [more]
,
Peg-8
what‑it‑does moisturizer/humectant | solvent
A smallish polymer molecule that is used as a solubilizer and viscosity control agent in cosmetic products. [more]
,
Caffeine
what‑it‑does antioxidant
The well-known stimulant from coffee. It has nice antioxidant properties and can improve the microcirculation. Might be helpful for dark circles, puffy eyes, as well as cellulite and hair loss. [more]
,
Ppg-5-Ceteth-20
what‑it‑does emulsifying | surfactant/cleansing | emollient
A helper ingredient that can solubilize challenging oils and oil-loving actives into cleansing products. It also has emollient and emulsifying, and wetting properties.
,
Polysorbate 20
what‑it‑does emulsifying | surfactant/cleansing
irritancy, com. 0 0
It's a common little helper ingredient that helps water and oil to mix together. Also, it can help to increase the solubility of some other ingredients in the formula. 
,
Jojoba Wax Peg-120 Esters
what‑it‑does surfactant/cleansing
,
Alcaligenes Polysaccharides
what‑it‑does emollient | moisturizer/humectant | viscosity controlling
,
Caprylyl Glycol
what‑it‑does moisturizer/humectant | emollient
A handy multi-tasking ingredient that gives the skin a nice, soft feel and also boosts the effectiveness of other preservatives. [more]
,
Sodium Pca
what‑it‑does skin-identical ingredient | moisturizer/humectant
irritancy, com. 0 0
It's an important skin-identical ingredient and great natural moisturizer that helps the skin to hold onto water and stay nicely hydrated. [more]
,
Polyquaternium-51
what‑it‑does moisturizer/humectant
A biocompatible copolymer with a similar structure to cell membrane ingredient, phospholipid. It's a good skin moisturizer and can also help to reduce irritation. [more]
,
Urea
what‑it‑does skin-identical ingredient | moisturizer/humectant
The thing in the pee that is also a natural moisturizing factor (NMF) with mild keratolytic and strong skin moisturizing superpowers. [more]
,
Trehalose
what‑it‑does moisturizer/humectant
A type of sugar that has water-binding properties and helps to keep your skin hydrated. 
,
Sodium Hyaluronate
what‑it‑does skin-identical ingredient | moisturizer/humectant
irritancy, com. 0 0
It's the salt form of famous humectant and natural moisturizing factor, hyaluronic acid. It can bind huge amounts of water and it's pretty much the current IT-moisturizer. [more]
,
Hexylene Glycol
what‑it‑does emulsifying | solvent | surfactant/cleansing
irritancy, com. 1 2
Similar to other glycols, it's a helper ingredient used as a solvent, or to thin out thick formulas and make them more nicely spreadable. Hexylene Glycol is also part a preservative blend named Lexgard® [more]
,
Potassium Sorbate
what‑it‑does preservative
A not so strong preservative that doesn’t really work against bacteria, but more against mold and yeast. [more]
,
Disodium Edta
what‑it‑does chelating
Super common little helper ingredient that helps products to remain nice and stable for a longer time. It does so by neutralizing the metal ions in the formula (that usually get into there from water) that would otherwise cause some not so nice changes. [more]
,
Limonene
what‑it‑does perfuming | solvent
A super common fragrance ingredient found naturally in many plants including citrus peel oils, rosemary or lavender. It autoxidizes on air exposure and counts as a common skin sensitizer. [more]
,
Citronellol
what‑it‑does perfuming
A common fragrance ingredient with a nice rose-like smell. [more]
,
Geraniol
what‑it‑does perfuming
A common fragrance ingredient that smells like rose and can be found in rose oil. [more]
,
Linalool
what‑it‑does perfuming
A super common fragrance ingredient that can be found among others in lavender, ylang-ylang, bergamot or jasmine. The downside of it is that it oxidises on air exposure and might become allergenic. [more]
,
Phenoxyethanol
what‑it‑does preservative
Pretty much the current IT-preservative. It’s safe and gentle, and can be used up to 1% worldwide. [more]
[less]
Water\Aqua\Eau , Methyl Gluceth-20 , Bis-Peg-18 Methyl Ether Dimethyl Silane , Glycerin , Sucrose , Glycereth-26 , Pelargonium Graveolens (Geranium) Flower Oil , Citrus Aurantium Amara (Bitter Orange) Oil , Citrus Grandis (Grapefruit) Peel Oil , Rosmarinus Officinalis (Rosemary) , Anthemis Nobilis (Chamomile) , Peg-8 , Caffeine , Ppg-5-Ceteth-20 , Polysorbate 20 , Jojoba Wax Peg-120 Esters , Alcaligenes Polysaccharides , Caprylyl Glycol , Sodium Pca , Polyquaternium-51 , Urea , Trehalose , Sodium Hyaluronate , Hexylene Glycol , Potassium Sorbate , Disodium Edta , Limonene , Citronellol , Geraniol , Linalool , Phenoxyethanol

Highlights

Key Ingredients

Antioxidant: Caffeine
what‑it‑does antioxidant
The well-known stimulant from coffee. It has nice antioxidant properties and can improve the microcirculation. Might be helpful for dark circles, puffy eyes, as well as cellulite and hair loss. [more]
Skin-identical ingredient: Glycerin
what‑it‑does skin-identical ingredient | moisturizer/humectant
irritancy, com. 0 0
A real oldie but a goodie. Great natural moisturizer and skin-identical ingredient that plays an important role in skin hydration and general skin health. [more]
,
Sodium Pca
what‑it‑does skin-identical ingredient | moisturizer/humectant
irritancy, com. 0 0
It's an important skin-identical ingredient and great natural moisturizer that helps the skin to hold onto water and stay nicely hydrated. [more]
,
Urea
what‑it‑does skin-identical ingredient | moisturizer/humectant
The thing in the pee that is also a natural moisturizing factor (NMF) with mild keratolytic and strong skin moisturizing superpowers. [more]
,
Sodium Hyaluronate
what‑it‑does skin-identical ingredient | moisturizer/humectant
irritancy, com. 0 0
It's the salt form of famous humectant and natural moisturizing factor, hyaluronic acid. It can bind huge amounts of water and it's pretty much the current IT-moisturizer. [more]
Soothing: Sucrose
what‑it‑does soothing | moisturizer/humectant
A type fo sugar, usually refined from cane or beet sugar. On the skin, it is water-binding properties and helps to keep your skin hydrated.
,
Anthemis Nobilis (Chamomile)
what‑it‑does soothing
Roman Chamomile - thanks to its phenolic compound had some nice soothing and skin toning properties. It contains less anti-inflammatory actives than the German Chamomile. [more]

Show all ingredients by function

Other Ingredients

Chelating: Disodium Edta
what‑it‑does chelating
Super common little helper ingredient that helps products to remain nice and stable for a longer time. It does so by neutralizing the metal ions in the formula (that usually get into there from water) that would otherwise cause some not so nice changes. [more]
Emollient: Bis-Peg-18 Methyl Ether Dimethyl Silane
what‑it‑does emollient | moisturizer/humectant
A type of silicone that makes the skin smooth and nice (emollient), moisturizes and helps to reduce the tackiness of the products. [more]
,
Glycereth-26
what‑it‑does moisturizer/humectant | emollient | viscosity controlling
It's a nice glycerin-based humectant and emollient that gives skin a smooth and luxurious feel.
,
Ppg-5-Ceteth-20
what‑it‑does emulsifying | surfactant/cleansing | emollient
A helper ingredient that can solubilize challenging oils and oil-loving actives into cleansing products. It also has emollient and emulsifying, and wetting properties.
,
Alcaligenes Polysaccharides
what‑it‑does emollient | moisturizer/humectant | viscosity controlling
,
Caprylyl Glycol
what‑it‑does moisturizer/humectant | emollient
A handy multi-tasking ingredient that gives the skin a nice, soft feel and also boosts the effectiveness of other preservatives. [more]
Emulsifying: Ppg-5-Ceteth-20
what‑it‑does emulsifying | surfactant/cleansing | emollient
A helper ingredient that can solubilize challenging oils and oil-loving actives into cleansing products. It also has emollient and emulsifying, and wetting properties.
,
Polysorbate 20
what‑it‑does emulsifying | surfactant/cleansing
irritancy, com. 0 0
It's a common little helper ingredient that helps water and oil to mix together. Also, it can help to increase the solubility of some other ingredients in the formula. 
,
Hexylene Glycol
what‑it‑does emulsifying | solvent | surfactant/cleansing
irritancy, com. 1 2
Similar to other glycols, it's a helper ingredient used as a solvent, or to thin out thick formulas and make them more nicely spreadable. Hexylene Glycol is also part a preservative blend named Lexgard® [more]
Moisturizer/humectant: Methyl Gluceth-20
what‑it‑does moisturizer/humectant
A corn sugar-derived, water-soluble, pale yellow syrup, that nicely moisturizes the skin. It has a light and smooth skin feel. [more]
,
Bis-Peg-18 Methyl Ether Dimethyl Silane
what‑it‑does emollient | moisturizer/humectant
A type of silicone that makes the skin smooth and nice (emollient), moisturizes and helps to reduce the tackiness of the products. [more]
,
Glycerin
what‑it‑does skin-identical ingredient | moisturizer/humectant
irritancy, com. 0 0
A real oldie but a goodie. Great natural moisturizer and skin-identical ingredient that plays an important role in skin hydration and general skin health. [more]
,
Sucrose
what‑it‑does soothing | moisturizer/humectant
A type fo sugar, usually refined from cane or beet sugar. On the skin, it is water-binding properties and helps to keep your skin hydrated.
,
Glycereth-26
what‑it‑does moisturizer/humectant | emollient | viscosity controlling
It's a nice glycerin-based humectant and emollient that gives skin a smooth and luxurious feel.
,
Peg-8
what‑it‑does moisturizer/humectant | solvent
A smallish polymer molecule that is used as a solubilizer and viscosity control agent in cosmetic products. [more]
,
Alcaligenes Polysaccharides
what‑it‑does emollient | moisturizer/humectant | viscosity controlling
,
Caprylyl Glycol
what‑it‑does moisturizer/humectant | emollient
A handy multi-tasking ingredient that gives the skin a nice, soft feel and also boosts the effectiveness of other preservatives. [more]
,
Sodium Pca
what‑it‑does skin-identical ingredient | moisturizer/humectant
irritancy, com. 0 0
It's an important skin-identical ingredient and great natural moisturizer that helps the skin to hold onto water and stay nicely hydrated. [more]
,
Polyquaternium-51
what‑it‑does moisturizer/humectant
A biocompatible copolymer with a similar structure to cell membrane ingredient, phospholipid. It's a good skin moisturizer and can also help to reduce irritation. [more]
,
Urea
what‑it‑does skin-identical ingredient | moisturizer/humectant
The thing in the pee that is also a natural moisturizing factor (NMF) with mild keratolytic and strong skin moisturizing superpowers. [more]
,
Trehalose
what‑it‑does moisturizer/humectant
A type of sugar that has water-binding properties and helps to keep your skin hydrated. 
,
Sodium Hyaluronate
what‑it‑does skin-identical ingredient | moisturizer/humectant
irritancy, com. 0 0
It's the salt form of famous humectant and natural moisturizing factor, hyaluronic acid. It can bind huge amounts of water and it's pretty much the current IT-moisturizer. [more]
Perfuming: Pelargonium Graveolens (Geranium) Flower Oil
what‑it‑does perfuming
The essential oil coming from the flowers of Rose Geranium. Like most essential oils, it contains antioxidant and antimicrobial components, but the main ones are fragrant constituents. [more]
,
Citrus Grandis (Grapefruit) Peel Oil
what‑it‑does perfuming
The essential oil coming from the rind of the grapefruit. Its main component (86-95%) is limonene, the super common fragrant ingredient. [more]
,
Limonene
what‑it‑does perfuming | solvent
A super common fragrance ingredient found naturally in many plants including citrus peel oils, rosemary or lavender. It autoxidizes on air exposure and counts as a common skin sensitizer. [more]
,
Citronellol
what‑it‑does perfuming
A common fragrance ingredient with a nice rose-like smell. [more]
,
Geraniol
what‑it‑does perfuming
A common fragrance ingredient that smells like rose and can be found in rose oil. [more]
,
Linalool
what‑it‑does perfuming
A super common fragrance ingredient that can be found among others in lavender, ylang-ylang, bergamot or jasmine. The downside of it is that it oxidises on air exposure and might become allergenic. [more]
Preservative: Potassium Sorbate
what‑it‑does preservative
A not so strong preservative that doesn’t really work against bacteria, but more against mold and yeast. [more]
,
Phenoxyethanol
what‑it‑does preservative
Pretty much the current IT-preservative. It’s safe and gentle, and can be used up to 1% worldwide. [more]
Solvent: Water\Aqua\Eau
what‑it‑does solvent
Normal (well kind of - it's purified and deionized) water. Usually the main solvent in cosmetic products. [more]
,
Peg-8
what‑it‑does moisturizer/humectant | solvent
A smallish polymer molecule that is used as a solubilizer and viscosity control agent in cosmetic products. [more]
,
Hexylene Glycol
what‑it‑does emulsifying | solvent | surfactant/cleansing
irritancy, com. 1 2
Similar to other glycols, it's a helper ingredient used as a solvent, or to thin out thick formulas and make them more nicely spreadable. Hexylene Glycol is also part a preservative blend named Lexgard® [more]
,
Limonene
what‑it‑does perfuming | solvent
A super common fragrance ingredient found naturally in many plants including citrus peel oils, rosemary or lavender. It autoxidizes on air exposure and counts as a common skin sensitizer. [more]
Surfactant/cleansing: Ppg-5-Ceteth-20
what‑it‑does emulsifying | surfactant/cleansing | emollient
A helper ingredient that can solubilize challenging oils and oil-loving actives into cleansing products. It also has emollient and emulsifying, and wetting properties.
,
Polysorbate 20
what‑it‑does emulsifying | surfactant/cleansing
irritancy, com. 0 0
It's a common little helper ingredient that helps water and oil to mix together. Also, it can help to increase the solubility of some other ingredients in the formula. 
,
Jojoba Wax Peg-120 Esters
what‑it‑does surfactant/cleansing
,
Hexylene Glycol
what‑it‑does emulsifying | solvent | surfactant/cleansing
irritancy, com. 1 2
Similar to other glycols, it's a helper ingredient used as a solvent, or to thin out thick formulas and make them more nicely spreadable. Hexylene Glycol is also part a preservative blend named Lexgard® [more]
Viscosity controlling: Glycereth-26
what‑it‑does moisturizer/humectant | emollient | viscosity controlling
It's a nice glycerin-based humectant and emollient that gives skin a smooth and luxurious feel.
,
Alcaligenes Polysaccharides
what‑it‑does emollient | moisturizer/humectant | viscosity controlling

Skim through

Ingredient name what-it-does irr., com. ID-Rating
Water\Aqua\Eau solvent
Methyl Gluceth-20 moisturizer/​humectant
Bis-Peg-18 Methyl Ether Dimethyl Silane emollient, moisturizer/​humectant
Glycerin skin-identical ingredient, moisturizer/​humectant 0, 0 goodie
Sucrose soothing, moisturizer/​humectant goodie
Glycereth-26 moisturizer/​humectant, emollient, viscosity controlling
Pelargonium Graveolens (Geranium) Flower Oil perfuming icky
Citrus Aurantium Amara (Bitter Orange) Oil icky
Citrus Grandis (Grapefruit) Peel Oil perfuming icky
Rosmarinus Officinalis (Rosemary) antimicrobial/​antibacterial
Anthemis Nobilis (Chamomile) soothing goodie
Peg-8 moisturizer/​humectant, solvent
Caffeine antioxidant goodie
Ppg-5-Ceteth-20 emulsifying, surfactant/​cleansing, emollient
Polysorbate 20 emulsifying, surfactant/​cleansing 0, 0
Jojoba Wax Peg-120 Esters surfactant/​cleansing
Alcaligenes Polysaccharides emollient, moisturizer/​humectant, viscosity controlling
Caprylyl Glycol moisturizer/​humectant, emollient
Sodium Pca skin-identical ingredient, moisturizer/​humectant 0, 0 goodie
Polyquaternium-51 moisturizer/​humectant
Urea skin-identical ingredient, moisturizer/​humectant goodie
Trehalose moisturizer/​humectant goodie
Sodium Hyaluronate skin-identical ingredient, moisturizer/​humectant 0, 0 goodie
Hexylene Glycol emulsifying, solvent, surfactant/​cleansing 1, 2
Potassium Sorbate preservative
Disodium Edta chelating
Limonene perfuming, solvent icky
Citronellol perfuming icky
Geraniol perfuming icky
Linalool perfuming icky
Phenoxyethanol preservative

Ingredients explained

Also-called: Aqua | What-it-does: solvent

Good old water, aka H2O. The most common skincare ingredient of all. You can usually find it right in the very first spot of the ingredient list, meaning it’s the biggest thing out of all the stuff that makes up the product. 

It’s mainly a solvent for ingredients that do not like to dissolve in oils but rather in water. 

Expand to read more

Once inside the skin, it hydrates, but not from the outside - putting pure water on the skin (hello long baths!) is drying. 

One more thing: the water used in cosmetics is purified and deionized (it means that almost all of the mineral ions inside it is removed). Like this, the products can stay more stable over time. 

What-it-does: moisturizer/humectant

A corn sugar derived, water-soluble, pale yellow syrup, that nicely moisturizes the skin. It has a light and smooth skin feel, it is non-tacky, and it can improve the after-feel of the formula. It is also mild and gentle, popular in sensitive skin formulas.

It's a silicone that is water dispersible (as opposed to most other silicones that are usually oil dispersible). It makes the skin smooth and nice (emollient), moisturizes, helps to reduce tackiness, and also has some foam boosting properties. Often used in light, watery formulas to give them extra silky feel

Glycerin - goodie
Also-called: Glycerol | What-it-does: skin-identical ingredient, moisturizer/humectant | Irritancy: 0 | Comedogenicity: 0
  • A natural moisturizer that’s also in our skin
  • Super common, used for more than 50 years
  • Not only a simple moisturizer but plays an important role in keeping the stuff between our skin cells healthy
  • High-glycerin moisturizers are awesome for treating severely dry skin
Read all the geeky details about Glycerin here >>

Sucrose - goodie

A type fo sugar, usually refined from cane or beet sugar. On the skin, it has water-binding properties and helps to keep your skin hydrated

It's a nice glycerin-based humectant and emollient that gives skin a smooth and luxurious feel.

Also-called: Rose Geranium Flower Essential Oil | What-it-does: perfuming

The fragrant essential oil coming from the flowers of Rose Geranium. Like most essential oils, it contains antioxidant and antimicrobial components, but the main ones are fragrant constituents (like citronellol and geraniol). Be careful with it, if your skin is sensitive. 

Also-called: Bitter Orange Flower Oil, Neroli Oil

The essential oil coming from the flowers of bitter orange (which is the sister of the sweet orange we all know and eat). It contains several fragrance components including linalool (around 30%) and limonene (around 10%) and has a lovely sweet smell

As it's an essential oil with lots of fragrant components, be careful with it if your skin is sensitive.  

Also-called: Grapefruit Peel Oil | What-it-does: perfuming

The essential oil coming from the rind of the grapefruit. In general, the main component of citrus peel oils is limonene (86-95% for grapefruit peel), a super common fragrant ingredient that makes everything smell nice (but counts as a frequent skin sensitizer).

Other than that, citrus peel also contains the problematic compound called furanocoumarin that makes them mildly phototoxic. In general, the more sour-bitter the fruit, the more problematic it is regarding phototoxicity: orange and clementine peel contain less of it while lemon, grapefruit, and bergamot contain some more. Be careful with it if it is in a product for daytime use.  

We don't have description for this ingredient yet.

Also-called: Roman Chamomile Flower Extract | What-it-does: soothing

There are two primary types of Chamomile, the German and the Roman. Both has soothing properties, but the German one contains more anti-inflammatory actives (like chamazulene). The anti-inflammatory action of the Roman Chamomile is due to phenolic compounds and -  according to manufacturer info- it also has some nice skin toning properties.

A smallish polymer molecule (created from repeated units of Polyethylene glycol, aka PEG) that's used as a solubilizer and viscosity control agent.

It is a clear, colorless liquid that is water-soluble and water-binding (aka humectant) and can help to solubilize sparingly-water soluble things (e.g. vanilla, perfumes) into water-based formulas. Thanks to its water-binding ability, it also prevents the drying out of formulas, especially when combined with the fellow hygroscopic agent, sorbitol

Caffeine - goodie
What-it-does: antioxidant

Hello, our favorite molecule that helps us wake up in the morning and then keeps us going through the day. As a super well-known stimulant from coffee, tea and plenty of other soft drinks, Caffeine needs no introduction. So we will skip right to the part where we talk about what the hell it does in so-so many cosmetic products.

Looking at the research, we were surprised to find how versatile Caffeine is. It is a small, water-loving molecule with pretty good skin penetration abilties. Once in the skin, it has nice antioxidant properties, meaning that it reduces the formation of evil free radicals and it might even be useful in preventing UV-induced skin cancers. 

Expand to read more

A well-known thing about Caffeine is that it improves the microcirculation of the blood vessels. Though conventional wisdom and anecdotal evidence says that this property is helpful for dark under-eye circles and puffy eyes, we have to mention that the double-blind research we have found about a 3% caffeine gel concluded that "the overall efficacy of the selected caffeine gel in reducing puffy eyes was not significantly different from that of its gel base."  But you know, the proof is in the pudding.

Another thing Caffeine is used for in body care products is its anti-cellulite effects. In theory, it can speed up the lipolysis process (the "fat burning"  by our cells) and stimulate the draining lymph system that might lead to the improvement of cellulite. But here again, the evidence that it actually makes a measurable, let alone visible,  improvement on actual human beings is limited (we could find only some animal skin studies or caffeine being combined with other actives). 

Last, but not least, we have to write about caffeine and hair growth. The theory is that it can inhibit the activity of the 5-α-reductase enzyme that plays an important role in hair loss and allows a renewed growth phase of the hair. We have found some recent and promising research to back this up. A 2017 study compared a 0.2% caffeine liquid with a 5% Minoxidil  (an FDA approved active to treat baldness) solution and found that  "a caffeine-based topical liquid should be considered as not inferior to minoxidil 5% solution in men with androgenetic alopecia", or English translation means that the caffeine liquid was pretty much as good as the FDA-approved Minoxidil stuff. Not bad!

Overall, we think that caffeine is a very versatile and biologically active ingredient. Even though some of its effects are more hyped up than backed up, it is still a nice to have on many ingredient lists. 

A helper ingredient that can solubilize challenging oils and oil-loving actives into cleansing products. It also has emollient, emulsifying, and wetting properties.

What-it-does: emulsifying, surfactant/cleansing | Irritancy: 0 | Comedogenicity: 0

It's a common little helper ingredient that helps water and oil to mix together. Also, it can help to increase the solubility of some other ingredients in the formula. 

What-it-does: surfactant/cleansing

We don't have description for this ingredient yet.

We don't have description for this ingredient yet.

It’s a handy multi-tasking ingredient that gives the skin a nice, soft feel. At the same time, it also boosts the effectiveness of other preservatives, such as the nowadays super commonly used phenoxyethanol

The blend of these two (caprylyl glycol + phenoxyethanol) is called Optiphen, which not only helps to keep your cosmetics free from nasty things for a long time but also gives a good feel to the finished product. It's a popular duo.

Sodium Pca - goodie
What-it-does: skin-identical ingredient, moisturizer/humectant | Irritancy: 0 | Comedogenicity: 0

PCA stands for Pyrrolidone Carboxylic Acid and though it might not sound like it, it is a thing that can be found naturally in our skin. The sodium salt form of PCA is an important skin-identical ingredient and great natural moisturizer that helps the skin to hold onto water and stay nicely hydrated. 

What-it-does: moisturizer/humectant

A biocompatible copolymer (a big molecule that consists of more than one type of building blocks) that has the same structure as important cell membrane ingredient, phospholipid. It's a good skin moisturizer, leaves a silky, smooth feel on the skin and can help to reduce irritation caused by some not-so-nice ingredients (like surfactants).

Urea - goodie
Also-called: Carbamide | What-it-does: skin-identical ingredient, moisturizer/humectant

Yes, it's the thing that can be found naturally in pee. And in the skin. It is an awesome natural moisturizing factor, aka NMF.  NMFs are important components that help the skin to hold onto water and keep it plump, elastic and hydrated. Urea makes up about 7% of NMFs next to other things such as amino acids (40%), PCA (12%) or Lactate (12%).

What makes urea special, is that it is not only a simple moisturizer, but it is thought to be a "small-molecule regulator of epidermal structure and function" meaning that it has a bunch of extra biological activities. It acts as a mild keratolytic agent (some of its moisturizing action is thought to come from urea's ability to break down bonds in the protein called filaggrin and thus freeing up amino acids in the skin), enhances antimicrobial peptide expression and improves skin barrier function

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Being a mild keratolytic agent and strong moisturizer means that high-percentage (10-40%) urea treatments are found effective in a bunch of skin disorders connected to excessive dryness and malfunctioning skin barrier such as ichthyosis, xerosis, psoriasis, eczema and seborrheic dermatitis.  

Overall, just like glycerin, urea is a real oldie but a goodie, a nice ingredient in any moisturizer.

Trehalose - goodie
What-it-does: moisturizer/humectant

A type of sugar that has water-binding properties and helps to keep your skin hydrated

What-it-does: skin-identical ingredient, moisturizer/humectant | Irritancy: 0 | Comedogenicity: 0

It’s the - sodium form - cousin of the famous NMFhyaluronic acid (HA). If HA does not tell you anything we have a super detailed, geeky explanation about it here.  The TL; DR version of HA is that it's a huge polymer (big molecule from repeated subunits) found in the skin that acts as a sponge helping the skin to hold onto water, being plump and elastic. HA is famous for its crazy water holding capacity as it can bind up to 1000 times its own weight in water.

As far as skincare goes, sodium hyaluronate and hyaluronic acid are pretty much the same and the two names are used interchangeably. As cosmetic chemist kindofstephen writes on reddit  "sodium hyaluronate disassociates into hyaluronic acid molecule and a sodium atom in solution". 

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In spite of this, if you search for "hyaluronic acid vs sodium hyaluronate" you will find on multiple places that sodium hyaluronate is smaller and can penetrate the skin better. Chemically, this is definitely not true, as the two forms are almost the same, both are polymers and the subunits can be repeated in both forms as much as you like. (We also checked Prospector for sodium hyaluronate versions actually used in cosmetic products and found that the most common molecular weight was 1.5-1.8 million Da that absolutely counts as high molecular weight).

What seems to be a true difference, though, is that the salt form is more stable, easier to formulate and cheaper so it pops up more often on the ingredient lists. 

If you wanna become a real HA-and-the-skin expert you can read way more about the topic at hyaluronic acid (including penetration-questions, differences between high and low molecular weight versions and a bunch of references to scientific literature).

What-it-does: emulsifying, solvent, surfactant/cleansing | Irritancy: 1 | Comedogenicity: 2

Similar to other glycols, it's a helper ingredient used as a solvent, or to thin out thick formulas and make them more nicely spreadable. 

Hexylene Glycol is also part a preservative blend named Lexgard® HPO, where it helps the effectiveness of current IT-preservative, phenoxyethanol

What-it-does: preservative

It's one of those things that help your cosmetics not to go wrong too soon, aka a preservative. It’s not a strong one and doesn’t really work against bacteria, but more against mold and yeast. To do that it has to break down to its active form, sorbic acid. For that to happen, there has to be water in the product and the right pH value (pH 3-4). 

But even if everything is right, it’s not enough on its own. If you see potassium sorbate you should see some other preservative next to it too.

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BTW, it’s also a food preservative and even has an E number, E202.

What-it-does: chelating

Super common little helper ingredient that helps products to remain nice and stable for a longer time. It does so by neutralizing the metal ions in the formula (that usually get into there from water) that would otherwise cause some not so nice changes.

Limonene - icky
What-it-does: perfuming, solvent, deodorant

A super common and cheap fragrance ingredient. It's in many plants, e.g. rosemary, eucalyptus, lavender, lemongrass, peppermint and it's the main component (about 50-90%) of the peel oil of citrus fruits.

It does smell nice but the problem is that it oxidizes on air exposure and the resulting stuff is not good for the skin. Oxidized limonene can cause allergic contact dermatitis and counts as a frequent skin sensitizer

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Limonene's nr1 function is definitely being a fragrance component, but there are several studies showing that it's also a penetration enhancer, mainly for oil-loving components.

All in all, limonene has some pros and cons, but - especially if your skin is sensitive - the cons probably outweigh the pros.  

Citronellol - icky
What-it-does: perfuming

Citronellol is a very common fragrance ingredient with a nice rose-like odor. In the UK, it’s actually the third most often listed perfume on the ingredient lists. 

It can be naturally found in geranium oil (about 30%) or rose oil (about 25%). 

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As with all fragrance ingredients, citronellol can also cause allergic contact dermatitis and should be avoided if you have perfume allergy. In a 2001 worldwide study with 178 people with known sensitization to fragrances citronellol tested positive in 5.6% of the cases.

There is no known anti-aging or positive skin benefits of the ingredient. It’s in our products to make it smell nice. 

Geraniol - icky
What-it-does: perfuming

Geraniol is a common fragrance ingredient. It smells like rose and can be found in rose oil or in small quantities in geranium, lemon and many other essential oils. 

Just like other similar fragrance ingredients (like linalool and limonene) geraniol also oxidises on air exposure and becomes allergenic. Best to avoid if you have sensitive skin.

Linalool - icky
What-it-does: perfuming, deodorant

Linalool is a super common fragrance ingredient. It’s kind of everywhere - both in plants and in cosmetic products. It’s part of 200 natural oils including lavender, ylang-ylang, bergamot, jasmine, geranium and it can be found in 90-95% of prestige perfumes on the market. 

The problem with linalool is, that just like limonene it oxidises on air exposure and becomes allergenic. That’s why a product containing linalool that has been opened for several months is more likely to be allergenic than a fresh one.

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A study made in the UK with 483 people tested the allergic reaction to 3% oxidised linalool and 2.3% had positive test results. 

What-it-does: preservative

It’s pretty much the current IT-preservative. It’s safe and gentle, but even more importantly, it’s not a feared-by-everyone-mostly-without-scientific-reason paraben.

It’s not something new: it was introduced around 1950 and today it can be used up to 1% worldwide. It can be found in nature - in green tea - but the version used in cosmetics is synthetic. 

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Other than having a good safety profile and being quite gentle to the skin it has some other advantages too. It can be used in many types of formulations as it has great thermal stability (can be heated up to 85°C) and works on a wide range of pH levels (ph 3-10). 

It’s often used together with ethylhexylglycerin as it nicely improves the preservative activity of phenoxyethanol.

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