- Emollients work by moisturizing dry skin, reducing scaling and relieving itching. They soften cracked areas and help the topical treatment to penetrate the skin and work more effectively.
- Topical steroids reduce skin inflammation and are of varying potency. The strength of ointment is decided by the site involved. Mild topical steroids are preferred on the face or in skin folds for short courses. Stronger topical steroids are used on thickened plaques of psoriasis such as the palms and soles.
Tar preparations have been used to treat psoriasis for many years. They help in reducing scaling and slow the skin overgrowth that occurs in psoriasis. Tar preparations include bath oils, creams, ointment, and shampoos.
Vitamin D analogs help regulate the immune system in the skin and reduce the hyperproliferation of skin in psoriasis. They are not usually prescribed during pregnancy, breastfeeding and can irritate sensitive skin areas such as the face and skin folds.