INCI · other · CIR review pending · used in 5 products
Valine
Valine is an essential amino acid and a building block of skin proteins such as collagen. Because it is essential, the human body cannot synthesize it on its own and must obtain it from external sources such as diet. It is classified as a branched-chain amino acid. Its topical role in skincare is not fully established, though it is grouped with other amino acids used in cosmetic formulations.
Evidence level
weakEWG score
—Comedogenic
—Category
other● Benefits
As an amino acid, valine is considered at minimum a skin hydrator. When taken as a supplement it is claimed to enhance energy, increase endurance, and aid in muscle tissue recovery, though these effects are not directly applicable to topical use.
hydratingskin-identical
● Cautions
