INCI · humectant · CIR review pending · used in 9 products
Serine
Serine is a non-essential amino acid, meaning the body can synthesize it on its own. It most commonly appears in cosmetic formulas as part of a moisturizing complex, functioning as a water-binding ingredient. Amino acids like serine are considered skin-identical ingredients, as they are naturally found in the skin's own chemistry.
Evidence level
weakEWG score
—Comedogenic
—Category
humectant● Benefits
Serine contributes to skin hydration by binding water in the skin. Amino acids in general play an important role in proper skin hydration, and serine's presence in the stratum corneum links it to skin moisture levels, as referenced in a 1989 British Journal of Dermatology study on stratum corneum hydration and amino acid content in xerotic skin.
hydratingskin-identicalbarrier-support
● Cautions
