Dual Acid Brightening Peel
Highlights
Key Ingredients
Other Ingredients
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| Ingredient name | what-it-does | irr., com. | ID-Rating |
|---|---|---|---|
| Aqua/Water/Eau | solvent | ||
| Alcohol Denat | antimicrobial/antibacterial, solvent, viscosity controlling | icky | |
| Gluconolactone | exfoliant, chelating | superstar | |
| Glycolic Acid | exfoliant, buffering | superstar | |
| Arginine | skin-identical ingredient | goodie | |
| Ethoxydiglycol | solvent, moisturizer/humectant, perfuming | 0, 0 | |
| Acetyl Glycyl Beta-Alanine | skin brightening | goodie | |
| PEG-12 Dimethicone | |||
| Sodium Hydroxide | buffering | ||
| Mentha Piperita (Peppermint) Oil | perfuming | icky | |
| Octoxynol-9 | emulsifying, surfactant/cleansing | com.:0-1 | |
| Hydroxyethylcellulose | viscosity controlling |
Neostrata Dual Acid Brightening PeelIngredients 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.
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.
- It's a super common and super debated skincare ingredient
- It has several benefits: great solvent, penetration enhancer, creates cosmetically elegant, light formulas, great astringent and antimicrobial
- It can be very drying if it's in the first few ingredients on an ingredient list
- Some experts even think that regular exposure to alcohol damages skin barrier and causes inflammation though it's a debated opinion (read more in geeky details tab)
- It’s a polyhydroxy acid (PHA), that is often referred to as next generation AHA
- It gently lifts off dead skin cells form the skin surface making skin smooth and even
- In the long term it provides anti-aging benefits, like increased skin thickness and decreased wrinkles (though a tad less than even more proven superstar AHAs)
- It’s a great moisturizer and even helps to repair impaired skin barrier
- It’s antioxidant, and does not make your skin more sensitive to the sun
- It can be used even if your skin is very sensitive, rosacea prone or if you are post cosmetic procedure
- It’s the most researched AHA with the most proven skin benefits
- It gently lifts off dead skin cells to reveal newer, fresher, smoother skin
- It can help skin’s own collagen production that results in firmer, younger skin
- It can fade brown spots caused by sun damage or PIH
- Choose a product where you know the concentration and pH value because these two greatly influence effectiveness
- Don’t forget to use your sunscreen (in any case but especially so next to an AHA product)
- Slight stinging or burning with a stronger AHA product is normal
- If your skin is very sensitive, rosacea prone choose rather a BHA or PHA product
A semi-essential (infants cannot synthesize it, but adults can) amino acid that is one of the primary building blocks of hair keratin and skin collagen. It's a natural moisturizing factor, a skin hydrator and might also help to speed up wound healing.
Arginine usually has a positive charge (cationic) that makes it substantive to skin and hair (those are more negatively charged surfaces) and an excellent film former. Thanks to the positive charge, it also creates a complex with AHAs (AHAs like to lose a hydrogen ion and be negatively charged, so the positive and the negative ions attract each other) that causes a "time-release AHA effect" and reduces the irritation associated with AHAs.
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.
A skin-whitening peptide that goes by the trade name GenoWhite. The manufacturer claims that it hinders the mechanism of pigmentation in two ways: first, it inhibits melanin generating enzymes like Tyrosinase so that less pigment is formed and then it also hinders the transport of the pigment to the upper layers of the skin where it becomes visible (little organelles called melanosomes carry the pigment upwards).
The in-vivo (made on real people) test of the manufacturer shows great spot-fading results after 56 days using 2% GenoWhite (with the first visible results showing already after 14 days).
A fluid silicone that reduces surface tension. It can improve oil (or silicone) in water emulsions with faster absorption, better spreading, and a lighter feel.
The unfancy name for it is lye. It’s a solid white stuff that’s very alkaline and used in small amounts to adjust the pH of the product and make it just right.
For example, in case of AHA or BHA exfoliants, the right pH is super-duper important, and pH adjusters like sodium hydroxide are needed.
BTW, lye is not something new. It was already used by ancient Egyptians to help oil and fat magically turn into something else. Can you guess what? Yes, it’s soap. It still often shows up in the ingredient list of soaps and other cleansers.
Sodium hydroxide in itself is a potent skin irritant, but once it's reacted (as it is usually in skin care products, like exfoliants) it is totally harmless.
The essential oil coming from steam distillation of freshly harvested, flowering peppermint sprigs. Its major component is menthol that gives the oil its well-known refreshing and cooling properties. Peppermint oil is traditionally used as an inhalant for cold and coughs and there is also some clinical data validating its use against headaches by rubbing a peppermint oil cream on the forehead.
As for skincare, other than the nice grassy-minty smell and the refreshing sensations, we cannot write good things. It can be a skin irritant, so much so that it is a well-known counterirritant for muscle pains creating mild surface irritation to make things better in the deeper layers. But for everyday skincare, counterirritation is not something you wanna do, so we think that peppermint oil is better to avoid, especially if your skin is sensitive.
We don't have description for this ingredient yet.
A nice little helper ingredient that can thicken up cosmetic products and create beautiful gel formulas. It's derived from cellulose, the major component of the cell wall of green plants. It is compatible with most co-ingredients and gives a very good slip to the formulas.
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| what‑it‑does | solvent |
| what‑it‑does | antimicrobial/antibacterial | solvent | viscosity controlling |
| what‑it‑does | exfoliant | chelating |
| what‑it‑does | exfoliant | buffering |
| what‑it‑does | skin-identical ingredient |
| what‑it‑does | solvent | moisturizer/humectant | perfuming |
| irritancy, com. | 0, 0 |
| what‑it‑does | skin brightening |
| what‑it‑does | buffering |
| what‑it‑does | perfuming |
| what‑it‑does | emulsifying | surfactant/cleansing |
| com. | 0-1 |
| what‑it‑does | viscosity controlling |