Ingredient

Azelaic acid derivative

On labels: Potassium Azeloyl Diglycinate

Gentler azelaic-acid relative that helps oil and tone.

What it does

Brightens the look of skin · Balances the look of oil

Evidence

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

Often chosen for

Oily, shiny skin, Dark spots and post-breakout marks, Skin prone to redness

Skin types

Oily, Combination, Normal, Sensitive

Typical amount

1-10% in a formula

Best time

Morning or evening