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Bain Thérapiste is Kérastase's shampoo for very damaged, over-processed hair, part of the Resistance line. It is a thick, low-lather formula built around repairing the fiber and smoothing rough cuticles, aimed at hair that has been through repeated coloring, bleaching or heat styling. Compared with mass-market repair shampoos, it is more concentrated and more conditioning, so many users need less per wash. Reviewers tend to say it leaves hair softer and easier to detangle, while some find it heavy on fine hair or say the repair effect fades without the matching mask and serum.
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Lowest price we've seen: $69.50 on Nov 10 at Shop Simon. Tracked across 2 stores since Nov 10.
Owners of damaged, color-treated hair generally rate Bain Thérapiste highly for softness and detangling, and many repurchase it. Criticism centers on weight for fine hair, the strong fragrance and the need to pair it with the mask to see real repair.