KÉRASTASE Resistance Therapiste Repairing Hair Mask 6.8 oz — Strengthens, Deeply Nourishes Damaged Hair

KÉRASTASE Resistance Therapiste Hair Mask is an intensive repairing cream that strengthens very damaged, over-processed hair and deeply nourishes to reduce breakage and boost softness and shine.

This rich, salon-grade mask is formulated to rebuild fragile hair fibers after chemical treatments, heat styling, or mechanical stress. Its concentrated texture penetrates the strand to replenish lost strength and moisture while smoothing surface roughness. Designed to work from mid-lengths to ends, the mask helps restore manageability and resilience without weighing hair down.

How does this mask rebuild and protect weakened hair?

The formula targets the hair fiber to reconstruct damaged zones and improve elasticity so strands resist snapping. Key active ingredients strengthen the inner structure and replenish hydration, making hair less prone to mechanical breakage.

• Wheat protein to reinforce the cortex and add tensile strength
• Native plant cells to help restore flexibility and surface integrity
• Concentrated repairing cream that penetrates rather than sits on the surface
• Smooths cuticle scales to reduce friction and split ends

When and how should I use the mask for best results?

Apply to clean, wet hair after shampooing, focusing on mid-lengths and ends where damage concentrates. Leave the product on for 5–10 minutes to let active ingredients absorb, then rinse thoroughly; it can be used regularly depending on damage level.

• Use a quarter-size amount for medium-length hair; increase for longer, thicker hair
• Massage strand by strand for even distribution and deeper penetration
• Recommended frequency: from daily use for very compromised hair to 1–3 times weekly for maintenance
• Pair with Resistance Extentioniste Shampoo and Conditioner for a complete regimen

What immediate and visible improvements should I expect?

After application, hair feels softer and looks smoother with reduced frizz and improved shine. Over multiple uses, fibers regain strength and elasticity, which helps prevent further breakage and enhances comb-through ease.

• Softer texture and more slip for easier detangling
• Noticeably reduced roughness and surface irregularities
• Enhanced light reflection for a healthier-looking shine
• Progressive reduction in split ends and breakage with repeated use

Can this mask be used on color-treated or chemically processed hair?

Yes—the formula is designed for over-processed and chemically treated hair, helping to restore fiber quality and improve resistance. It is compatible with color and smoothing treatments, functioning as a strengthening and hydrating step in aftercare routines.

• Safe for colored, straightened, or permed hair as part of regular maintenance
• Helps protect treated hair from further mechanical damage
• Works well alongside salon treatments for extended upkeep

Who is this for: KÉRASTASE Resistance Therapiste Hair Mask is intended for people with very damaged, fragile, or over-processed hair seeking a concentrated repair treatment. If your hair has been weakened by coloring, bleaching, heat styling, or frequent chemical services and you want improved strength, softness, and manageability, this cream-mask delivers salon-level reconstruction at home when used regularly and in combination with the Resistance collection.

Ingredients

Water, Cetearyl Alcohol, Paraffinum Liquidum / Mineral Oil, Orbignya Oleifera Seed Oil, Dipalmitoylethyl Hydroxyethylmonium Methosulfate, Fragrance, Cetyl Esters, Cetrimonium Chloride, Caprylyl Glycol, Linalool, Citric Acid, 2-Oleamido-1,3-Octadecanediol, Citronellol, Bht, Glycine, Arginine, Proline, Tyrosine, Glutamic Acid, Geraniol, Serine, Hydroxypropyltrimonium Hydrolyzed Wheat Protein, Benzyl Alcohol, Safflower Glucoside, Isoeugenol, Glycerin, Trehalose, Tamarindus Indica Seed Polysaccharide, Myrothamnus Flabellifolia Leaf Extract.