Ichthyosis can't be cured, but treatments can help you manage dry and scaly skin.
Rub cream, lotion, or ointment onto your skin every day to add moisture. Look for rich creams that have any of these ingredients: lanolin, alpha hydroxy acids, urea, or propylene glycol. Products with ceramides or cholesterol also keep skin moist.
Apply the lotion right after you step out of the shower or bath, when your skin is still damp. This will help hold in moisture.