Selerex Dandruff Shampoo is a medical-grade anti-dandruff treatment containing Selenium Sulfide as its active ingredient. This specialized formula targets the root cause of dandruff to provide effective control and relief from flaking and scalp irritation. The shampoo contains Selenium Sulfide which is clinically proven to help control dandruff by targeting its source. The pure medical-grade formula is designed specifically for treating dandruff-prone scalps. The product comes in a 200ml bottle size.