Already in your skin
Urea makes up around 7% of the natural moisturizing factor. Skincare urea is made in a lab and is identical to the urea your skin produces.
Strength changes the job
At up to about 5%, urea mainly draws water into the skin. At around 10% and above, it also loosens the bonds between dead skin cells, which is why it is used for rough elbows, heels and very dry patches.
