For dry, rough and cracked heels. Dermal Therapy's therapeutic formula helps relieve very dry skin with Urea. Urea causes skin cells deep below the surface to attract, absorb and hold moisture. Dermal Therapy also includes alpha hydroxy acids which help displace old dry skin and reveal new skin which is more elastic. Dermal Therapy contains silk protein to improve skin tone and luster, giving skin a silky, smooth, non greasy feel.