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  1. Full-Size Leave-In Molecular Repair Hair Mask 50mL | K18Hair

    Apply 1-3 pumps of K18 leave-in molecular repair hair mask based on your length and density, starting at the ends and working up towards the roots. Comb, add product + style as usual. Use for 4-6 …

    • Reviews: 8.5K
    • Full-Size Leave-In Molecular Repair Hair Mask 50 mL | K18 Hair PRO

      A retail-sized version of the K18 mask helps to maintain your client's hair strength and elasticity in-between salon appointments. This leave-in treatment mask for all hair types that reverses damage in …

    • K18 Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, …

      This leave-in treatment mask works on the molecular level to reverse hair damage in just 4 minutes. It tackles daily damage with immediate and lasting results to restore strength, softness, smoothness …

    • Leave-in Molecular Repair Hair Mask - K18 Biomimetic Hairscience

      Shop K18’s Leave-in Molecular Repair Mask at Sephora. This mask clinically reverses damage in minutes for stronger, softer, smoother, bouncier hair.

    • K18 Hair Mask Review 2025: I Tried the Viral Repairing Treatment

      May 29, 2025 · Lemme get into it. What is K18? K18 started with one single product: The Leave-In Molecular Repair Hair Mask.

    • K18 Biomimetic Hairscience Professional Molecular Repair Mask

      Nov 13, 2025 · This leave-in treatment mask for all hair types that reverses damage in 4 minutes. Patented peptide technology works to repair damage from bleach, color, chemical services & …

    • K18 Leave-In Molecular Repair Mask Review 2025 - Byrdie

      Feb 12, 2025 · The K18 Leave-In Molecular Repair Hair Mask made our hair thicker, longer, and healthier. After using it twice weekly for a year, here’s what we found.

    • Leave-In Molecular Repair Hair Mask - K18 Biomimetic Hairscience ...

      The K18 professional molecular repair hair mask is meant to be used as the second part of the K18REPAIR™ service. Apply 1-3 pumps of K18 professional molecular repair hair mask based on …

    • The K18 Leave-In Molecular Repair Hair Mask Saved My Hair

      Apr 23, 2025 · The K18 Leave-In Molecular Repair Hair Mask has quickly become the crown jewel of the brand’s science-backed, stylist-approved lineup. In recent years, K18 has cornered the market on …

    • 2PCS-K18 Leave-In Molecular Repair Hair Mask 5 oz/150ml

      Discover K18's 2PCS Leave-In Molecular Repair Hair Mask 5 oz/150ml, a patented peptide formula that repairs keratin, strengthens cuticles, and restores damaged hair