Thickening Volume. Zero Sulfates, Parabens, Dyes, Gluten, Phthalates, Propylene Glycol. With Plant Based Ingredients. Biodegradable Formula. pH Balanced. Animal Test-Free PETA. At Renpure, we believe that everyone deserves beautiful hair, without compromise. Bring your hair to life without the use of harmful ingredients, while caring for our planet. How It Works: Crafted with a custom blend of Vitamin B7 (Biotin) and protein (Collagen) to give the look of fuller, luscious looking hair.