Leave-in molecular repair hair mask.
4-minute leave-in treatment to reverse hair damage.
✓ For all hair types
✓ Vegan
✓ Cruelty free
Leave-in molecular repair hair mask.
4-minute leave-in treatment to reverse hair damage.
✓ For all hair types
✓ Vegan
✓ Cruelty free
Security policy
Express Delivery
Delivery policy
Delivery from physical store through online ordering
A leave-in treatment mask that works on the molecular level to reverse hair damage in just 4 minutes.
The K18PEPTIDE™ is clinically proven to repair damage from bleach + color, chemical services and heat – with immediate and lasting results to restore strength, softness, smoothness and bounce to hair.
✓ Suitable for all types hair.
✓ K18PEPTIDE™ is a biotech-developed peptide that mimics hair's structure to reverse damage by reconnecting polypeptide chains and disulfide bonds broken during bleaching, color and chemical services + heat.
✓ pH-optimized (5.0-6.0) to help minimize cuticle swelling + put hair proteins in their most resilient state
✓ Cream format enables easy, lightweight application across all hair types, with detangling and softening benefits.
✓ Takes damage repair further – reconnects both polypeptide chains (and as a result, also reconnects disulfide bonds) for strength along the length + width of the hair - offering comprehensive, lasting damage repair.
✓ Restores hair from even extreme damage - by working at the innermost layer of the hair, core strength and elasticity are renewed for strong, smooth, bouncy hair.
✓ Delivers immediate and lasting results – hair is repaired from the first use and lasts past your next wash, for ongoing reparative benefits.
✓ Simplified repair - convenient, leave-in formula works in just 4 minutes, with no extra rinse required.
✓ Works on all hair types – because K18PEPTIDE™ works on a molecular level (where all hair is the same), this product is effective on all hair types.
✓ Vegan
✓ Cruelty free
Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20,sh-Oligopeptide-78 (K18PEPTIDE™), Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol.
Shampoo, do not condition.
Towel-dry thoroughly
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
Let sit for 4 minutes.
Do not rinse out
Comb, add product + style as usual.
Use for 4-6 washes post-salon service, then as needed.
Discover the appropriate dose for your hair:
✓ 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
X DON'T use conditioner before applying K18 Mask (you can apply after the 4 min but most find they don’t need it)
X DON'T overdo it—less is more
X DON'T rinse it out
how does the k18 mask work?
The K18 mask works as a treatment to reverse damage in 4 minutes. It’s powered by our biomimetic K18PEPTIDE™ to seamlessly fit in and reconnect broken polypeptide chains at the molecular level. As a result, disulfide bonds are also reconnected for reinforced strength along the length + width of hair—offering comprehensive, lasting, and progressive repair.
what is the k18peptide™?
K18PEPTIDE™ is a biotech-developed peptide that mimics hair’s structure to reverse damage by reconnecting polypeptide chains and disulfide bonds broken during damage from bleach + color, chemical services, and heat*
why skip conditioner?
Conditioner leaves a film that blocks our peptide from penetrating effectively. Once the 4-minute wait time is up, feel free to use a conditioner, a leave-in, or any type of product.
i noticed there’s alcohol in the formula, isn’t that bad for you?
We like to keep our formulas minimal, only using the exact amount of ingredients needed to get the peptide where it needs to go. Here the alcohol serves as an agent to optimize the hair environment for the K18 mask to work on a deeper level. Our unique blend of 3 alcohols functions to open the hair cuticle so the K18PEPTIDE™ can penetrate the innermost layer of hair, reaching the broken polypeptide chains (keratin chains).
when should i expect to see results?
Most see results after 2-3 uses.
The more damaged the hair, the more dramatic the results so it may vary depending on your hair type and level of damage.
Clinically proven to protect the color, does not cause irritation and is dermatologically tested.
Like the entire K18 series, it does not contain: sulfates, parabens, phthalates, lilium, silicones , artificial dyes, sodium chloride, formaldehyde and its derivatives.
It is vegan and cruelty-free.
K18Peptide™ is a patented breakthrough molecular breakthrough clinically proven to repair hair damage (in just 4 minutes) by:
✓ the re-opening + the paint
✓ chemical works
✓ the heat
The results ?
Thanks to the deep repair and reconstruction of the internal structure of the hair, K18 products restore the strength, softness, vitality and shine that was missing from damaged hair.
And as we mentioned… they only take 4 minutes to work.
