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Product Description: Cysteine straightening salon serum hair treatment 5x keratin serum Product Usage: After shampooing apply hair treatment to hair. leave on for 10 minutes then rinse of thoroughly with water. for best results use 3-4 times a wee Ingredients: Water Cetearyl Alcohol Glycerin Cetrimonium Chloride Mineral Oil Polyquaternium 7 Fragrance Dimethicone Citric Acid D-Panthenol Cysteine Hcl Tocopheryl Acetate Argania Spinosa (Argan) Oil Butylene Glycol Aloe Barbadensis Leaf Extract Hydrolyzed Collagen Methylchloroisothiazolinone Methylisothiazolinone