2-Mercaptonicotinoyl Glycine is a synthetic antioxidant that also helps modulate skin tone. It targets the look of uneven pigmentation and dullness, and works best for a brighter appearance when paired with daily broad-spectrum sunscreen.
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is 2-Mercaptonicotinoyl Glycine a Good Ingredient?
It rates Fair because published cosmetic data are limited and tolerance can vary; some users may notice temporary irritation or odor. It shows promise but is not yet as established as leading brightening agents.
What it does
Skin Benefits
May reduce the look of dark patches and a lackluster complexion, promoting a more uniform appearance. Current evidence is emerging, so results can vary.
Where you'll find it
Uses in Skincare & Cosmetics
Found in targeted serums and spot treatments designed for tone refinement. Also included in leave-on creams within brightening routines alongside sunscreen.
Before you use it
Safety
Early data suggest acceptable safety at cosmetic levels, but sensitive skin can experience tingling or redness. Introduce slowly and avoid pairing with several strong actives at once. Daily sunscreen complements any tone-evening routine.