Your hair has been tested by the elements, and it needs help to maintain its strength. By blending concentrated Protein in the formula, the Purezero Biotin Collection delivers the help you need and leaves you with strong, resilient hair. Game, Set, Match.Purezero prides itself as a brand on having the best performing hair care products on the market, while also avoiding any ingredients that may damage your hair or be a risk to your wellness. We are constantly evaluating all of our ingredients and staying up to date on new research in the field. There are over 100 ingredients that we refuse to put in our products (including all Parabens, Sulfates, Dyes, Phosphates, Phthalates, Gluten, Any Formaldehyde Releasing Preservatives, and many many more!). We continue to monitor our ingredients and products so that you don't have to. Pure Ingredients, Zero Concerns. It's that simple.