Skin irritation, dry skin, oily or dry hair/scalp, or temporary hair loss may occur. If any of these effects persist or worsen, discontinue use and consult your doctor or pharmacist promptly. Hair discoloration may occur and can be reduced by carefully rinsing the hair thoroughly after each treatment. If your doctor has prescribed this medication, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.