Ingredient

Glutathione

Antioxidant used in brightening formulas.

What it does

Antioxidant · Brightens the look of skin

Evidence

Evidence: Limited · Mostly lab or early data so far.

Often chosen for

Dull, uneven-looking tone, Dark spots and post-breakout marks

Skin types

Dry, Oily, Combination, Normal

Typical amount

0.1-2% in a formula

Best time

Morning or evening