K18 Leave in

$99.95
or 4 interest-free payments of $24.99 with

K18 leave-in molecular repair hair mask 50ml

A leave-in treatment mask for all hair types that clinically reverses damage in 4 minutes. The K18 peptide technology works to repair damage from bleach, color, chemical services & heat – restoring strength, softness, smoothness, and bounce to hair.

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K18 leave-in molecular repair hair mask 50ml

A leave-in treatment mask for all hair types that clinically reverses damage in 4 minutes. The K18 peptide technology works to repair damage from bleach, color, chemical services & heat – restoring strength, softness, smoothness, and bounce to hair.

K18 leave-in molecular repair hair mask 50ml

A leave-in treatment mask for all hair types that clinically reverses damage in 4 minutes. The K18 peptide technology works to repair damage from bleach, color, chemical services & heat – restoring strength, softness, smoothness, and bounce to hair.

How to use

  1. Shampoo, do not condition.

  2. Towel-dry thoroughly.

  3. Begin with 1 pump of K18 mask and add more as needed depending on length, thickness, and condition. Work evenly into hair from ends to roots, one pump at a time, maximum dosage is 3 pumps.

  4. Let sit for 4 minutes. Do not rinse out.

  5. Then comb + style as usual (fine to add heat protectant or styling product now).

  6. Use for the first 4-6 washes, then as needed

Dos & don'ts

  • DO clarify before K18 if you’re a heavy product user (demineralize for mineral + metal buildup)

  • DO apply on clean, damp hair

  • DO wait the full 4 minutes before combing or styling

  • DO add whatever styling products you love after the 4 minutes

  • DO use for 4-6 shampoos consecutively for progressive results.

  • DON'T use conditioner before applying K18 Mask (you can apply after the 4 min but most find they don’t need it)

  • DON'T overdo it—less is more

  • DON'T rinse it out