Nioxin's Anti-Breakage Strengthening Mask is a rinse-out conditioning treatment built to reinforce the hair shaft against breakage, part of Nioxin's Density Defend line for weakened, damaged, or color-treated hair. Nioxin reports it reduces breakage by up to 97% in strand testing.
The formula pairs conditioning agents (stearyl alcohol, behentrimonium chloride, cetyl alcohol) with hydrolyzed silk and a blend of botanical extracts — bilberry leaf, sugar cane, sugar maple, lemon peel, and orange fruit — plus candlenut (aleurites moluccanus) seed oil to smooth and nourish the strand. It's suitable for all hair types and lengths and can be used as a regular part of a wash routine rather than an occasional deep treatment.
Apply to clean, towel-dried hair after shampooing, working from mid-lengths to ends where breakage is most likely. Leave on for 3 to 5 minutes, then rinse thoroughly — no heat cap or extended processing needed.