INCI · other · CIR review pending · used in 1 products
Threonine(300 Ppm)
Threonine is an essential amino acid that serves as a key building block of collagen and elastin. When taken orally, it supports digestive and intestinal tract function and aids nutrient absorption. In skincare formulations, its primary identified role is as a skin hydrator. It is listed here at a concentration of 300 ppm.
Evidence level
weakEWG score
—Comedogenic
—Category
other● Benefits
Threonine functions as a skin-identical ingredient and skin hydrator in topical formulations. As a structural component of collagen and elastin, it may support the skin's natural protein matrix, though its specific topical benefits beyond hydration are not clearly established by the source.
hydratingbarrier-support
● Cautions
