Selsun Blue Medicated Max Strength Dandruff Shampoo Dealing with dandruff? Selsun Blue Medicated Max Strength Dandruff Shampoo ($7) contains menthol, which delivers a soothing, cooling sensation, as well as 1% selenium sulfide to eliminate flakes. Image Source: walmart.com Selsun Blue Medicated Max Strength Dandruff Shampoo $7 from walmart.com Buy Now