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Gl

Glutathione

GlutathioneAntioxidant

Sold for brightening, but it barely gets into skin; most evidence comes from pills or IV use. The marketing runs ahead of the evidence.

What it does

It’s the body’s main antioxidant inside cells. Skincare sells it for brightening, but most of the evidence comes from pills or IV drips, which carry their own risks. On skin it barely gets in without special delivery, so the marketing runs ahead of the evidence.

Also known as

GSH, l-glutathione

Pairs worth knowing

L-Ascorbic Acid (Vitamin C) · works together ↗Niacinamide (Vitamin B3) · works together ↗Alpha Arbutin · works together ↗

Browse all 1238 ingredients — grouped by what they do, each with whatever evidence we can cite.

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