Selenium disulfide, selenium sulfide.
Fongistatic action (acts against the fungus responsible of dry and oily dandruffs and Pityriasis versicolor1). Recognized by the dermatology community, this anti-fungal active ingredient is usually very well tolerated by the skin2. It is recommended to leave the selenium sulfide-containing product in contact with the skin for a few minutes to maximize its efficacy3. Vichy Dercos Anti-Dandruff shampoo, Ducray Sélégel Anti-dandruff shampoo. Cutis. 2004 Jun;73(6):425-9. J Drugs Dermatol. 2004 Jul-Aug;3(4):427-31. www.emedicine.com