Urea

What is it?

A humectant and gentle exfoliant (effects depend on %).

What skin condition does it help with?

Low %: dehydration, dryness. High %: rough skin, keratosis pilaris.

Which skin types need it?

Dry, rough, textured skin; suitable for all at low concentrations.

Do not combine with:

Strong acids, retinol on same night

What are the common risks?

Stinging

What are the safe-use guidelines?

High % for body use; face ≤10%