Relax and enjoy the most luxurious hair care with the OZiva Bioactive Biotin33 Hair Mask. With highly concentrated biotin, this hair mask promotes hair growth and makes hair stronger and thicker.OZiva Bioactive Biotin33 Hair Mask is a gentle and highly effective plant-powered shampoo that is clinically proven to promote 33% increase in hair volume* and leads to stronger hair with better texture*Based on clinically proven ingredients in product- amisol trio.