Betadine shampoo is used to treat fungal and bacterial infections of the scalp, such as severe dandruff, psoriasis, and seborrheic dermatitis. It also helps cleanse the scalp and remove microbes and impurities that may cause irritation or itching. The shampoo contains povidone-iodine, which works as an effective antiseptic against many types of germs and fungi.
Betadine shampoo is also used in some cases before surgeries that require sterilization of the scalp. It is suitable for people who suffer from recurrent skin infections in the head area. It is used by massaging an appropriate amount of it into the scalp, leaving it for several minutes, and then rinsing it with water. It should be used according to the doctor's instructions to avoid dryness or skin irritation.