This professional-grade Haskell Pos Progressiva Shampoo is designed for the maintenance of hair that has undergone progressive straightening treatments. It offers specialized care to prolong the smoothing effects and ensure hair remains healthy and manageable. Formulated to gently cleanse while depositing necessary restorative elements, this shampoo helps to seal the cuticles, reducing frizz and preserving the integrity of the treatment between salon visits. It is an essential part of a dedicated post-treatment regimen.