Ingredient

Urea

Hydrates at low levels and softens rough, flaky patches at higher levels.

What it does

Hydrates · Exfoliates

Evidence

Evidence: Strong · Well studied for skincare use.

Often chosen for

Dry, tight-feeling skin, Rough texture, Over-exfoliated, stressed skin

Skin types

Dry, Normal

Typical amount

2-10% in a formula

Best time

Morning or evening