Selenium sulfide shampoo is a medicated product used to treat scalp conditions such as dandruff and seborrhea. It can also treat fungal skin infections such as tinea versicolor, according to the National Institutes of Health. Selenium sulfide is the active ingredient in the shampoo. It is sold generically under that name and also under the brand names Selsun Blue, Head and Shoulders and Dandrex, as well as by prescription.
How It Works
Selenium sulfide treats dandruff and skin flaking by suppressing cell growth on the epidermis, the outermost layer of skin, according to RXList. When cell growth is stunted, dandruff is eliminated or reduced. It also has antifungal effects that make it useful in treating tinea versicolor, a fungal skin infection that can occur anywhere on the body.
How To Use It
Always use selenium sulfide shampoo exactly as directed, whether it is an over-the-counter or prescription product. The shampoo should be used once a week to treat dandruff and seborrhea, according to the National Institutes of Health. After washing with your regular shampoo, use 1 teaspoon or 2 teaspoons on your hair, massaging it in well. Leave it on the hair for two to three minutes before rinsing thoroughly and then repeat the process a second time. After using it, be sure to thoroughly rinse your hair and skin so none of the shampoo remains.
Side Effects
Some side effects are possible while using selenium sulfide shampoo. You may notice that your scalp is drier or more oily than usual or your hair may fall out or shed more rapidly than before, according to the National Institutes of Health. These side effects are no cause for concern. The hair may also become discolored, but this can usually be prevented by thoroughly rinsing your hair after using the shampoo. Notify your doctor immediately is your scalp or skin becomes irritated or is blistered, burned, red, itchy or peeling.
Precautions
Selenium sulfide shampoo should only be used externally. It should not be used in children younger than 2 without consulting with a doctor, and women who are pregnant or breastfeeding should speak with a doctor before using it. Take care to avoid getting the shampoo in the nose and mouth. Avoid getting the shampoo in the eyes. If you do, rinse thoroughly for several minutes. Never use selenium sulfide shampoo on broken or burned skin. Also, do not leave the product in the hair for extended periods--such as overnight--because skin irritation can result, according to the National Institutes of Health. Selenium sulfide can damage jewelry, so remove all jewelry before using it.
Interactions
Because selenium sulfide is used topically, the risk of drug interactions is minimal. However, you should avoid using it at the same time as other topical medications, according to Drugs.com. When used with other products, selenium sulfide may not be absorbed properly and may not be as effective. Always discuss your complete medical history, including prescription and over-the-counter drugs and herbal products you are using with a medical professional before using selenium sulfide shampoo.
