Dry skin is characterised by rough, scaly or flaking, Cracks in the skin, which may bleed if severe with chapped or cracked lips.
there are many causes of dry skin like Allergic disorders like eczema etc, Autoimmune diseases like thyroid, diabetes, occupational like those who worked in hot & humid environment.
Caustic soaps, detergents, long shower, swimming can cause dry skin.
Treatment
Proper hydration with emollients & moisturizers.
Treatment of the underlying cause.
avoid harsh soap, alcoholic spray, lotion or cleanser.