Melatonin is an endogenously produced indoleamine also made biotechnologically for topical formulations. Serums and creams use it for antioxidant support and barrier-focused routines, with emerging but not definitive evidence for skin applications.
An antioxidant compound explored for evening skincare and barrier support.
Category
Antioxidant, Barrier Support, Soothing
Type
Antioxidant
Ingredient Ratings
Overall Rating
Good
Comedogenic Risk
None
Skin Benefits
Helps defend skin against environmental stressors and supports a stronger-feeling barrier, especially in evening routines, though evidence is promising but still maturing for topical use.
Uses In Skincare & Cosmetics
Common in night serums, face creams, and eye creams aimed at recovery-focused routines.
Comedogenic Rating
This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.
Safety
Usually well tolerated, though mild irritation is possible for some users; patch testing is prudent. No widely cited cosmetic regulatory restrictions at typical use levels.
Is Melatonin a Good Ingredient?
Emerging studies support antioxidant and barrier benefits in topical formats, with generally good tolerability at cosmetic concentrations, which earns it Good. The evidence is promising but not yet strong across large trials, so it hasn't reached a higher rating.