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Kevin.Murphy

Kevin.Murphy Leave-In.Repair Keratin Treatment

  • Keratin leave-in treatment
  • Heat protection up to 200 F / 93 C
  • Weightless, glossy finish
  • Sulphate and paraben free, cruelty free
  • All hair types

Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A light protein leave-in that strengthens hair and protects it from moderate styling heat. The heat limit is modest, so very hot irons exceed its listed protection.

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ASIN: B01N9TKST8Category: Hair Conditioners

Overview

Not a rinse-out mask, Kevin.Murphy Leave-In.Repair is a keratin treatment left on damp hair to repair and strengthen. It also doubles as a heat protectant while leaving hair glossy and weightless.

Protein plus heat protection in one step trims a styling routine. The stated heat limit is lower than the settings many flat irons use, so it suits blow drying more than high-heat tools.

Who it's for

Damaged or brittle hair on a daily styling routine is the use case. People needing deep moisture for very dry curls may want a creamier leave-in.

Pros and cons

Pros
  • Keratin helps reduce breakage
  • Doubles as a heat protectant
  • Weightless, glossy finish
  • Sulphate and paraben free
Cons
  • Heat protection limit is modest
  • Directions not listed
  • Light moisture for very dry hair

Performance notes

Protein fills weak spots along the strand, which is how breakage drops over repeated use. Heat protection works within the stated limit, so the tool temperature decides how much it can shield.

Specifications

BrandKevin.Murphy
Construction & materials
Material FeaturesCruelty free
Material Type FreeSulphate free, paraben free
Other details
Hair TypeAll
Hair Conditioner TypeLeave-in treatment
ProtectionHeat up to 200 F / 93 C
Product BenefitsRepair, strength, shine, manageability
Active IngredientsKeratin

Frequently asked questions

What comes with Kevin.Murphy Leave-In.Repair?

A single bottle of the leave-in treatment. No applicator or other products are listed.

Is Kevin.Murphy Leave-In.Repair a heat protectant?

Yes. It shields hair up to 200 F / 93 C.

Do you rinse it out?

No. It is a leave-in treatment.

Is it sulphate free?

Yes, sulphate free, paraben free and cruelty free.