Click to expand Tap to zoom Nioxin - Scalp Renew Density Protection 45ml by Nioxin Save 0% Save -24% Please register or login to view prices. SKU 81274103 Density Protection restores a dense, vibrant, healthy appearance to hair. This take-home anti-breakage cosmetic hair treatment helps restore a dense, vibrant, healthy appearance to hair and helps reduce hair breakage by an average of 54%.