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K18 leave in molecular repair Hair Mask 50ml


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A leave-in treatment mask for all hair types that clinically reverses damage in 4 minutes. The peptide technology works to repair damage from bleach, colour, chemical services & heat – restoring strength, softness, smoothness, and bounce to hair.


IN the shower
1. Shampoo, do not condition.

    OUT of the shower
    1. Towel dry thoroughly.
    2. Begin with 1 pump of the K18 Mask and add more as needed depending on the length, thickness, and condition.
    3. Work evenly into hair from ends to roots, one pump at a time.
    4. Let sit for 4 minutes to activate.
    5. Do NOT rinse out.
    6. Style as usual.

      For short fine hair - 1 Pump
      For short thick hair - 2 Pumps
      For medium fine hair - 1-2 Pumps
      For medium thick hair - 2-3 Pumps
      For long fine hair - 2 - 3 Pumps
      For long thick hair - 3-4 Pumps

      • DO use a clarifying shampoo if you’re a heavy product or dry shampoo user to remove buildup and help our peptide penetrate and get where it needs to go.
      • DO wait the full 4 minutes before styling or applying other product
      • DO use every 4-6 shampoos consecutively to see and feel ongoing results
      • DON’T condition your hair before application (trust us, most won’t need it after K18, if you still need, add a leave-in after the 4-minute window is up post-application)
      • DON’T overuse, a little goes a long way.
      • DON’T rinse out. This is a leave-in, so you know, leave it in!

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        Our preferred courier service is Royal Mail. 

        Free UK Standard Delivery for orders over £50- Please allow 2-3 working days for delivery.

        UK Standard delivery £4- Please allow 2-3 working days for delivery.

        UK Next Day Delivery £5.25- Please allow 1-2 working days for delivery 




        We currently offer a free collection service. We will aim to have your products ready to be collected within 24-48 hours, Monday to Friday. The collection address is:

        HOB Salons, 333 Watling Street, Radlett, Herts, WD7 7LB.

        Customer Reviews

        Based on 1 review
        Caroline Todd
        Early Days - but promise shown.

        It's early days have used the product 3 times. Have noticed an improvement in my hair's condition.- was very dry particularly underneath and this is improving a lot. I usually have brazilian straightner treatments to improve codition every 3 months. Am hoping K18 maybe can be used instead?

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        K18 leave in molecular repair Hair Mask 50ml

        K18 leave in molecular repair Hair Mask 50ml