Do urea/ammonium lactate combinations help protect your skin protection and why?

Healthy Skin. Ammonium lactate is a combination of ammonium hydroxide and lactic acid, acting as moisturizer for the skin. Urea acts by loosening skin thick or scaly skin cells allowing them to shed. This combination is often used to treat rough or scaly skin conditions like those found in eczema and psoriasis and can also help soften callouses and dry/cracked skin.