Redken Extreme Strength Builder Fortifying Mask is a hair care product designed to strengthen and fortify damaged or distressed hair. This mask is part of the Redken Extreme hair care line, which is formulated to repair and prevent damage to hair caused by heat styling, chemical treatments, and environmental stressors. Contains a blend of proteins and ceramides, which work together to strengthen and rebuild the hair's natural protective barrier. This helps to prevent further damage and breakage, while also restoring the hair's natural shine and smoothness. To use the Strength Builder Fortifying Mask, you should first shampoo your hair with a Redken Extreme shampoo. Then, apply the mask evenly to your hair, focusing on the areas that are most damaged or in need of repair. Leave the mask on for 5 to 15 minutes, depending on the level of damage to your hair, and then rinse thoroughly with warm water. This is a unisex product. Comes in creams form. Set of 2, 1 oz each. Ingredients include glycerin, hydrolyzed soy protein, hydrolized begetable protein, camellia leaf flower, and citric acid.