**4.2.2 Anthralin**

Anthralin 0.1-3% cream has been used for long-term treatment of scalp Psoriasis. Concentration should be gradually increased according to body response and tolerance of the patient. Anthralin is applied in a thin layer to the psoriatic area once a day, rubbed in well and left on the scalp for 5-10 minutes before washing with a shampoo and rinsing well. It is not used for acutely inflamed scalp Psoriasis. Redness or irritation of the treated scalp is common. Anthralin may temporarily stain the fingernails, gray/white hair, skin and fabrics. Caution is advised in patients having history of allergy to anthralin or to condoms (e.g., parabens).
