Strengthening and protectin hair, Nioxin's 3D Intensive Deep Protect Density Mask is a professional treatment for thinning hair. Boosted with Densiprotect technology, it works to deeply condition dry or coloured hair, providing maximum protection and strengthening the hair shaft against damage, reducing breakage. The lightweight density-protect Nioxin hair mask delivers manageability and smoothness to the hair, providing hair density protection with up to 97% reduction of hair breakage.**Based on hair length of 12 inch/30cm, measured by weight of broken hair vs. non-conditioning shampoo.