The Kérastase Bain Thérapiste is a specialized balm-in-shampoo formulated to gently cleanse and restore severely damaged or over-processed hair fibers. Its unique texture provides an enveloping wash experience, minimizing further mechanical damage during cleansing. This treatment is ideal for hair that has undergone frequent coloring, heat styling, or chemical treatments, helping to reinforce the hair structure from within while preparing it for subsequent conditioning steps.