Selsun Blue Medicated with Menthol is an anti-dandruff shampoo that is formulated to provide relief from dandruff symptoms, including itchy scalp and visible flakes. It contains 1% selenium sulfide, which is an active ingredient known for its anti-fungal properties and ability to help remove dead skin cells. The product also features a cooling menthol ingredient that offers a refreshing sensation to soothe the scalp.For effective use, the shampoo should be shaken well, applied to wet hair, massaged onto the scalp, and then rinsed off. It can be repeated if desired, and for best results, its recommended to use the product at least twice a week or as directed by a healthcare provider. This shampoo is specially designed to fight and help prevent the recurrence of flaking and itching associated with dandruff.The product does not contain sodium lauryl sulfate (SLS), and it is not tested on animals. While the ingredients are mostly synthetic or plant-derived, the product is not certified vegan or gluten-free because its not tested for the presence of gluten, and its not guaranteed that all ingredients are free from animal by-products. It is also not designed to stimulate hair growth or treat acne.The shampoo is pH-balanced and can be followed by a conditioner after washing. Its not specifically tested on chemically treated or color-treated hair, so those with treated hair should consider consulting with a professional before use. The shampoo is green in color and should be left in the hair for approximately two minutes to allow the selenium sulfide to work effectively on the scalp. Content : 1 unit, 325ml.