Ingredient library
Every ingredient SkinAtlas knows about — all 2178 of them. What each one does, what it works well with, and what to watch for.
131 ingredients matching "acid" — page 6 of 6
A sulfonic amino acid that functions as a humectant and osmoprotectant, helping skin cells maintain hydration balance under osmotic stress.
A water-soluble, photostable organic UVA filter (Ecamsule/Mexoryl SX) approved in the EU at up to 10% that absorbs UV radiation predominantly in the UVA range.
The tetrasodium salt of etidronic acid (HEDP — hydroxyethylidene diphosphonic acid). A chelating agent that binds calcium and heavy metal ions in formulations, preventing oxidative degradation and enhancing preservative effectiveness. Common in toners and emulsions.
Alpha-lipoic acid, a fast-acting antioxidant that is both water- and fat-soluble, letting it work throughout the skin to neutralize free radicals.
An essential amino acid used as a humectant that contributes to the skin's natural moisturizing factor.
A brightening active particularly effective on stubborn pigmentation.
A biodegradable chelating agent used as a greener alternative to disodium EDTA to bind trace metals and improve preservative performance in cosmetics.
An essential amino acid (L-tryptophan) included in cosmetic amino acid complexes that mimic the skin's natural moisturizing factor, providing conditioning and supporting protein synthesis.
A conditionally essential aromatic amino acid used in cosmetics as a humectant that helps maintain skin hydration.
An essential amino acid used in cosmetics as a humectant that supports the skin's natural moisturizing factor system.
Wheat Amino Acids is a mixture of amino acids derived from the hydrolysis of wheat gliadin or gluten proteins. The amino acid profile of wheat protein is rich in glutamic acid/glutamine, proline, and glycine — all components of the natural moisturizing factor and collagen. In cosmetics it functions as a conditioning humectant that replenishes stratum corneum amino acid content and contributes mild film-forming properties.