What it does
The body's master antioxidant. Topically supports collagen integrity, brightens uneven pigmentation, and neutralizes free radicals.
Best for
Brightening routines, mature skin, and antioxidant-focused PM use.
The full picture
Glutathione is a tripeptide (glutamate + cysteine + glycine) produced naturally in every human cell. It is the body's master antioxidant, regenerating vitamins C and E and clearing reactive oxygen species before they damage DNA. Topical glutathione has growing clinical evidence for skin brightening (it inhibits tyrosinase, the enzyme behind dark spots), barrier support, and free-radical defense. Found in K-beauty firming and brightening essences (numbuzin features it).
Evidence
Topical glutathione has been shown to improve skin brightness, reduce hyperpigmentation, and support antioxidant defense in clinical studies.
Read the source: PubMed: topical glutathione and skin ->