Forming a part of System 2, a three-step regimen specifically designed for those with progressed thinning, the Nioxin Scalp and Hair Conditioner adds visible fullness to the strands in 30 days. The nourishing formula provides all-over hydration that doesn’t weigh the hair down, while minimising the risk of breakage with a blend of niacinamide and biotin. With continued use, strands feel stronger with a thicker, more voluminous appearance. Dermatologist tested.