K18 x Future Society Leave-In Molecular Repair Hair Mask

K18 x Future Society Leave-In Molecular Repair Hair Mask is rated 5.0 out of 5 by 38.
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1.7 oz.
#PP084844

What It Is

A limited-edition K18 x Future Society collab. Biology-first molecular hair repair mask scented with fragrance inspired by extinct flower DNA.

What It Does

• Reverses damage in 4 minutes* to restore strength, softness, smoothness + bounce

• Immediate + progressive results*

• Limited-edition scent

What Else You Need to Know

Making the impossible possible in haircare and scent with biotech.

K18's biology-first molecular hair repair mask, powered by the patented K18PEPTIDE™, has the right size + molecular structure to repair multiple types of bonds at the molecular level. It works in just 4 minutes*—delivering immediate + lasting strength, softness, smoothness, and bounce for all hair types.

In collaboration with Future Society, this limited-edition scent is inspired by extinct flower DNA, and brought back to life with biotech. Floating Forest is a fresh aquatic floral scent, rooted in an extinct rainforest tree once found only in Borneo.

In the shower:

• Shampoo, don‘t condition.

 

Out of the shower:

• Gently towel dry hair until damp.

• Apply one mL/one dime-sized amount of K18 Mask.

• Only add more as needed. Average use is two mL/two dime-size amounts (this is a highly concentrated formula, so you‘ll need much less than traditional masks).

• Work evenly into hair from ends to roots.

• Wait four minutes for the K18PEPTIDE™ to reach the innermost layers of hair

• Don‘t rinse out.

• Style as usual after the four minutes is up (fine to add heat protectant or styling product now). -Use for the first four to six washes, then swap to maintenance mode and use as needed.

Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20, sh-Oligopeptide-78, Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Benzyl Alcohol, Benzyl Salicylate, Beta-Caryophyllene, Citrus Aurantium Bergamia Peel Oil, Limonene, Linalool, Linalyl Acetate, Pinene, Terpineol, Terpinolene, Tetramethyl Acetyloctahydronaphthalenes.

Purchases made in SalonCentric stores may be returned to any SalonCentric store. Purchases made through SalonCentric Customer Service, SalonCentric Business Partners, and SalonCentric.com orders Sold and Shipped by SalonCentric may be returned to a SalonCentric store; however, the return must not exceed $450 and must include the original receipt, packing slip, or invoice. For returns in-store of online orders, the refund will be credited back to the original payment method once the return has been processed. For SalonCentric.com Online Exclusive orders sold and shipped by third-party sellers, please see more details linked below for return steps.

The SalonCentric return policy does not currently apply to Kérastase & Shu Uemura purchases. Kérastase & Shu Uemura do not accept returns.

Click to see more details.

Rated 5 out of 5 by from K18 for the win K18 is one of my favorite treatments to offer. I love how it helps restore strength from the inside out while leaving the hair feeling soft, healthy, and incredibly refreshed ✨
Date published: 2026-05-26
Rated 5 out of 5 by from Miracle in a bottle!! K18 Leave in repair mask is a Miracle in a little bottle! It rescued my hair after multiple bleaches and so much damage! It now feels so good and is on its way back to being healthy again! I can’t tell enough clients or people about it! And this scent is wonderful! Love Love!
Date published: 2026-04-29
Rated 5 out of 5 by from Fragrance well worth trying! This limited edition scent is so pleasing, unique and fresh. The origin story behind the fragrance was very interesting also. The mask itself is outstanding.
Date published: 2026-04-28
Rated 5 out of 5 by from A must This is a must have if you or your clients need an instant long lasting repair from over styling. This product revolutionized hair repair.
Date published: 2026-04-26
Rated 5 out of 5 by from 10/10 Absolutely LOVE this hair mask! It smells AMAZING and helps my bleached hair stay healthy. I get so many compliments whenever I put this in my hair!
Date published: 2026-04-25
Rated 5 out of 5 by from 18/10! I loooooove the science to k18! I have fine fragile hair with split dye blonde and I have noticed a massive difference in my ends since I’ve started using this product. Not to mention, their new collab with future society has unleashed a scent with their new k18 product and it smells amazing! I always get compliments on how I smell fresh out of the shower! K18 rocks!
Date published: 2026-04-23
Rated 5 out of 5 by from Soft amazing hair! I use this everytime I get out of the shower. It’s amazing. My hair is so soft and does not look frizzy or damaged. Doesn’t feel nasty in your hair.
Date published: 2026-04-23
Rated 5 out of 5 by from nice light scent The same molecular repair masks we all love in a night light scent. It’s very gender neutral & clean.
Date published: 2026-04-21
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