Goldwell DualSenses Bondpro Prewash Cortex Filler

A bond-building treatment that repairs highly damaged hair from within by rebuilding bonds in the cortex, helping reduce signs of overprocessing. Hair is up to 10x stronger with 96% less breakage, with results lasting up to 3 washes. Powered by peptides and amino acids to target damaged areas, it's ideal for weak, fragile hair. Apply to dry or damp hair before shampooing, leave on up to 5 minutes, then rinse, shampoo, and condition