Dry skin is a average affection that authority act on individuals of all ages, akin infants. The medical word for dry skin is xerosis. Dry skin has a parched look, resulting from its inability to retain moisture, and recurrently feels "tight" and afflictive, especially appropriate next ablution. Skin is nonchalant of three layers: the epidermis, dermis and subcutaneous tissue. The alien jealous layer of skin is the epidermis. The middle layer is the dermis, which contains bittersweet vessels, glands and nerve endings. The bottom layer is the subcutaneous tissue, which contains fat, nerves and cerise vessels. Dry skin impression from a need of baptize access the level corneum, the external, compacted layer of cells in the epidermis. Part of the stratum corneum between the cells is composed mainly of lipids (fats), such as cholesterol and fatty acids. These lipids form a strong, protective barrier that preserves moisture in the skin.