k18-leave-in-hair-mask-4-minute-repair-treatment-for-damaged-colored-or-frizzy-hair
k18-leave-in-hair-mask-4-minute-repair-treatment-for-damaged-colored-or-frizzy-hair
k18-leave-in-hair-mask-4-minute-repair-treatment-for-damaged-colored-or-frizzy-hair
k18-leave-in-hair-mask-4-minute-repair-treatment-for-damaged-colored-or-frizzy-hair
k18-leave-in-hair-mask-4-minute-repair-treatment-for-damaged-colored-or-frizzy-hair
k18-leave-in-hair-mask-4-minute-repair-treatment-for-damaged-colored-or-frizzy-hair
k18-leave-in-hair-mask-4-minute-repair-treatment-for-damaged-colored-or-frizzy-hair
k18-leave-in-hair-mask-4-minute-repair-treatment-for-damaged-colored-or-frizzy-hair
k18-leave-in-hair-mask-4-minute-repair-treatment-for-damaged-colored-or-frizzy-hair
k18-leave-in-hair-mask-4-minute-repair-treatment-for-damaged-colored-or-frizzy-hair

K18 Leave In Hair Mask 4 Minute Repair Treatment for Damaged Hair

€51,90 EUR
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Size
  • 50ml
  • 150ml
Free shipping on orders over €50 Shipping Policy.
30 day return Return Policy.
Clinical Repair. Instant Strength. No Rinse.
A biotech breakthrough that restores hair like never before—smooth, strong, and healthy in just 4 minutes.
Molecular Repair That Works
The K18 Leave-In Molecular Repair Hair Mask is a patented peptide-powered treatment that reverses hair damage at the molecular level. Unlike traditional masks that only coat the hair, K18’s bioactive K18Peptide™ travels deep into the inner cortex to reconnect broken keratin chains caused by bleaching, coloring, heat, and chemical services.
Clinically proven to restore strength, softness, and elasticity in just 4 minutes, this no-rinse treatment works across all hair types—making it a must-have for anyone recovering from damage or looking to protect their hair from future stress.
Product Details
  • Full Name: K18 Leave-In Molecular Repair Hair Mask
  • Category: Leave-In Repair Treatment / Post-Chemical Recovery Mask
  • Key Ingredients: K18Peptide™, Glycerin, Alcohol Denat. (fast-absorbing base)
  • Texture: Lightweight cream
  • Hair Type: All types (especially bleached, dyed, heat-damaged, or chemically treated)
  • Volume: 50ml
  • Packaging: Minimalist pump bottle for precise application
  • Made in: USA
  • In the Box: 1 bottle of treatment
What It Solves
  • Damage from bleach, dye, heat styling, or relaxers
  • Weak, brittle hair that breaks easily
  • Loss of elasticity and bounce
  • Split ends and rough texture
  • Long-term structural hair damage
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Key Benefits
  • K18Peptide™ Technology – Clinically proven to repair broken keratin chains in the hair fiber
  • Only 4 Minutes – Delivers full-strength results in under 5 minutes
  • No-Rinse Formula – Stays in the hair for continuous repair and protection
  • Salon-Level Results at Home – The gold standard for stylists and colorists worldwide
  • Safe for Daily or Weekly Use – Lightweight and non-greasy
Why It’s Different
  • Patented K18Peptide™ clinically backed by biotech research
  • Repairs damage from the inside out—not just the surface
  • No rinse required = no extra step
  • Works in just 4 minutes
  • Clean, cruelty-free, and color-safe


  • How to Use

  1. Shampoo hair, do not condition.
  2. Towel-dry thoroughly.
  3. Start with 1–3 pumps depending on hair length and thickness.
  4. Apply evenly from ends to roots.
  5. Wait 4 minutes. Do not rinse.
  6. Style as usual (you may apply styling products afterward).
  • Use for 4–6 consecutive washes after chemical treatments, then as needed
  • Do not use with conditioner or masks before application

What Our Customers Say

"I bleached my hair three times in one year—this is the only thing that truly repaired it." 

– Emily, 29

"Soft, strong, and no residue. It actually works. I’ll never stop using K18." 

– Hana, 36

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Frequently Asked Questions

Can I use it with conditioner or mask?

No. K18 must be applied on clean, towel-dried hair without prior conditioner for full absorption.

How soon will I see results?

Most users notice visible softness and strength after just 1–2 uses.

Is it safe for color-treated or bleached hair?

Yes. K18 is formulated specifically for chemically processed and color-treated hair.

Does it make hair greasy or heavy?

 Not at all. The formula is lightweight, fast-absorbing, and leaves no residue.