20% Vitamin C+E Ferulic Acid Serum
Ingredients overview
| what‑it‑does | solvent |
| what‑it‑does | solvent |
| what‑it‑does | antioxidant | skin brightening |
| what‑it‑does | moisturizer/humectant | solvent | viscosity controlling |
| irritancy, com. | 0 0 |
| what‑it‑does | antioxidant |
| irritancy, com. | 2 2 |
| what‑it‑does | emulsifying |
| what‑it‑does | soothing | moisturizer/humectant |
| irritancy, com. | 0 0 |
| what‑it‑does | antioxidant | antimicrobial/antibacterial |
| what‑it‑does | skin-identical ingredient | moisturizer/humectant |
| irritancy, com. | 0 0 |
| what‑it‑does | preservative | perfuming | solvent | viscosity controlling |
| what‑it‑does | preservative |
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Highlights
Key Ingredients
| what‑it‑does | antioxidant | skin brightening |
| what‑it‑does | antioxidant |
| irritancy, com. | 2 2 |
| what‑it‑does | antioxidant | antimicrobial/antibacterial |
| what‑it‑does | antioxidant | skin brightening |
| what‑it‑does | skin-identical ingredient | moisturizer/humectant |
| irritancy, com. | 0 0 |
| what‑it‑does | soothing | moisturizer/humectant |
| irritancy, com. | 0 0 |
Skim through
| Ingredient name | what-it-does | irr., com. | ID-Rating |
|---|---|---|---|
| Water | solvent | ||
| Ethoxydiglycol | solvent | ||
| L-Ascorbic Acid | antioxidant, skin brightening | superstar | |
| Propylene Glycol | moisturizer/humectant, solvent, viscosity controlling | 0, 0 | |
| Alpha Tocopherol | antioxidant | 2, 2 | superstar |
| Polysorbate 80 | emulsifying | ||
| Panthenol | soothing, moisturizer/humectant | 0, 0 | goodie |
| Ferulic Acid | antioxidant, antimicrobial/antibacterial | goodie | |
| Sodium Hyaluronate | skin-identical ingredient, moisturizer/humectant | 0, 0 | goodie |
| Benzyl Alcohol | preservative, perfuming, solvent, viscosity controlling | ||
| Dehydroacetic Acid | preservative |
Ingredients explained
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.
A nice odorless liquid used mainly as a superior solubilizer and efficacy booster for cosmetic active ingredients such as skincare bigshot vitamin C, self-tanning active DHA or the anti-acne gold standard, benzoyl peroxide.
Other than that it can also be used in hair care products where it gives a longer-lasting and more uniform coloring. According to a manufacturer, it might even prevent the formation of split ends.
- Works best between a concentration of 5-20%
- Boosts the skin’s own collagen production
- Fades pigmentation and brown spots
- If used under sunscreen it boosts its UV protection
- Extremely unstable and oxidizes very easily in presence of light or air
- Stable in solutions with water only if pH is less than 3.5 or in waterless formulations
- Vit E + C work in synergy and provide superb photoprotection
- Ferulic acid doubles the photoprotection effect of Vit C+E and helps to stabilize Vit C
- Potent Vit. C serums might cause a slight tingling on sensitive skin
- It's a helper ingredient that improves the freeze-thaw stability of products
- It's also a solvent, humectant and to some extent a penetration enhancer
- It has a bad reputation among natural cosmetics advocates but cosmetic scientists and toxicology experts do not agree (read more in the geeky details section)
- Primary fat-soluble antioxidant in our skin
- Significant photoprotection against UVB rays
- Vit C + Vit E work in synergy and provide great photoprotection
- Has emollient properties
- Easy to formulate, stable and relatively inexpensive
A common little helper ingredient that helps water and oil to mix together, aka emulsifier.
The number at the end refers to the oil-loving part and the bigger the number the more emulsifying power it has. 20 is a weak emulsifier, rather called solubilizer used commonly in toners while 60 and 80 are more common in serums and creams.
An easy-to-formulate, commonly used, nice to have ingredient that’s also called pro-vitamin B5. As you might guess from the “pro” part, it’s a precursor to vitamin B5 (whose fancy name is pantothenic acid).
Its main job in skincare products is to moisturise the skin. It’s a humectant meaning that it can help the skin to attract water and then hold onto it. There is also research showing that panthenol can help our skin to produce more lovely lipids that are important for a strong and healthy skin barrier.
Ferulic Acid (FA) is a goodie that can be found naturally in plant cell walls. There is a lot of it especially in the bran of grasses such as rice, wheat and oats.
FA - whose main job is to be an antioxidant - owes its fame to a 2005 research that discovered that adding in 0.5% FA to a 15% Vitamin C + 1% Vitamin E solution not only stabilizes the highly unstable, divaish Vit C, but it also doubles the photoprotection abilities of the formula.
It’s the - sodium form - cousin of the famous NMF, hyaluronic 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".
It's one of those things that help your cosmetics not to go wrong too soon, aka a preservative. It can be naturally found in fruits and teas but can also be made synthetically.
No matter the origin, in small amounts (up to 1%) it’s a nice, gentle preservative. Has to be combined with some other nice preservatives, like potassium sorbate to be broad spectrum enough.
A helper ingredient that helps to make the products stay nice longer, aka preservative. It works mainly against fungi and has only milder effect against bacteria.
It is Ecocert and Cosmos approved, works quite well at low concentrations (0.1-0.6%) and is popular in natural products.
