HumectantKeratolyticEmollientBarrier Repair
Urea
Tier 2 Evidence
what it does
A naturally occurring compound in the skin's natural moisturising factor that acts as both a humectant and keratolytic. Low concentrations hydrate; higher concentrations (20–40%) soften and exfoliate thickened skin.
Unglamorous name, genuinely one of the best moisturisers going. Your skin naturally makes urea — you're just topping it up. At 10% it's a moisturiser. At 40% it's a medical-grade callus destroyer. Same molecule, very different vibes.
targets these concerns
the studies
products with this ingredient
Advanced Repair CreamEucerin