Generic name: Urea
Hydro 40 is a medicine to treat rough, dry, scaly skin due to the conditions like eczema, psoriasis, dermatitis, calluses, cracked skin. It may also be used by your physician to treat other disorders of skin or nails.
It refers to debriding agents. It helps the dead skin breakdown, thus shedding and loosening scaly and hard skin. It works by skin moistening and softening.

