Urea: what it does and how to use it

Urea is part of the skin's natural moisturizing factor. At low levels it hydrates; at higher levels it softens rough, thick skin.

What it does

• Draws water into the surface layer.
• At higher strengths, loosens built-up dead skin on heels, elbows and rough patches.

Strength and rules

• Face and body moisturizers commonly use up to 10%; foot creams for calluses often use 20% or more.

How to use it

• Use high-strength products only on rough areas, not on the face.

Who should be careful

• Can sting on cracked or broken skin.

General information, not medical advice. If you have a skin condition or are pregnant, ask your doctor.