KÉRASTASE Resistance Bain Therapiste Shampoo 8.5 fl oz — reconstructing treatment for severely damaged hair

KÉRASTASE Resistance Bain Therapiste is a deeply restoring shampoo that rebuilds and hydrates severely damaged hair to reduce breakage and revive elasticity.

If your hair is brittle, over-processed, or weakened by heat and chemical services, this shampoo from KÉRASTASE’s Resistance line targets internal fiber damage to improve strength and manageability. Formulated with Fibra-Kap technology, it gently cleanses while helping reconstruct broken bonds within the hair strand. Regular use with the matching mask and serum creates a complementary routine focused on reconstruction, shine, and a smoother finish.

How does this shampoo repair extremely damaged hair?

Bain Therapiste works by delivering rebuilding ingredients into the hair fiber to help reconnect and reinforce weakened areas. It cleans without stripping, allowing restorative molecules to penetrate and act on split or stressed lengths and ends. The result is hair that feels stronger and looks more even in texture.

• Contains Fibra-Kap technology to target internal fiber loss
• Seals damaged hair fibers from within for reduced frizz
• Formulated to clean gently while supporting reconstruction

What changes will I notice after using it?

After use, hair typically appears revived, with fewer visible splits and a smoother surface that reflects light better. You’ll experience softer, more elastic strands that resist snapping under tension. Over continued use, breakage decreases and lengths feel less rough to the touch.

• Improved softness and silkier touch
• Reduced friction and smoother finish
• Visibly repaired ends and renewed radiance

How should I use Bain Therapiste for best results?

Apply a coin-sized amount to wet hair and massage from roots to ends to distribute the formula evenly, then rinse. Repeat, focusing the second application on lengths and ends; leave on for two minutes before rinsing thoroughly to give the active ingredients time to work. Pair with the Therapiste Mask and Serum to complete the Resistance reconstruction ritual.

• First wash: cleanse and remove buildup
• Second wash: concentrate on lengths and damaged ends
• Leave for 2 minutes on second application, then rinse

Can this shampoo replace other strengthening products in my routine?

Bain Therapiste is designed as a core reconstructive cleanser, but it performs best within the full Resistance regimen. Use it alongside the Therapiste Hair Mask and Serum for targeted reconstruction, enhanced radiance, and improved long-term resilience. For daily maintenance, combine with suitable styling and heat-protection products as needed.

• Core step for reconstructive routines
• Best paired with mask and serum from the Resistance range
• Complements heat protectants and styling products

Who is this for: KÉRASTASE Resistance Bain Therapiste is ideal for people with severely damaged, brittle, and over-processed hair seeking a high-performance reconstructive shampoo. It’s formulated for hair that needs intensive fiber repair and hydration rather than light cleansing—best for those using heat tools, chemical services, or who notice frequent breakage and split ends. Use as part of a targeted repair regimen for the fastest visible improvement.

Ingredients

Water, Sodium Laureth Sulfate, Coco-Betaine, Glycerin, Glycol Distearate, Amodimethicone, Sodium Chloride, Imethicone, Ppg-5-Ceteth-20, Sodium Benzoate, Polyquaternium-6, Peg-150 Distearate, Salicylic Acid, Linalool, 2-Oleamido-1,3-Octadecanediol, Carbomer, Trideceth-6, Citronellol, Glycine, Arginine, Proline, Tyrosine, Glutamic Acid, Geraniol, Serine, Hydroxypropyltrimonium, Hydrolyzed Wheat Protein, Cetrimonium Chloride, Benzyl Alcohol, Safflower Glucoside, Isoeugenol, Trehalose, Tamarindus Indica Seed Polysaccharide, Myrothamnus Flabellifolia Leaf Extract, Citric Acid, Sodium Hydroxide, Fragrance.