WOW Skin Science Anti-Dandruff Hair Mask's advanced formulation has Rosebay Extract to rebalance scalp's microflora, reduce oiliness of scalp and regulate scalp's inflammatory response to slay Malassezia, the dandruff causing fungus. It also has Tea Tree Essential Oil, nature's very own anti-fungal remedy, that helps neutralize fungus on scalp. It has Hydrolyzed Wheat Protein (gluten-free) to help repair damaged hair and Moroccan Argan Oil to add shine and bounce. This hair mask works by boosting scalp health and cutting out itching, irritation and allergies.