K18 x Future Society Leave-In Hair Mask
K18 x Future Society Leave-In Hair Mask
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This limited-edition restorative hair mask is a K18 and Future Society collaboration that merges the Floating Forest fragrance with molecular hair repair.
What Else You Need to Know:
Powered by K18’s signature K18PEPTIDE, this hair mask targets repair at the molecular level to facilitate lasting strength. Acting in just four minutes, hair is instantly stronger, softer, smoother and bouncier.
Key Ingredients
Key Ingredients
- K18PEPTIDE™: Repairs damage from bleach, color, chemical services, and heat.
- Hydrolyzed Wheat Protein: Adds volume and improves the smoothness of the hair.
- Vitamin E: Helps to nourish the scalp and can promote healthier hair growth.
Benefits
Benefits
- Reverses damage in 4 minutes* to restore strength, softness, smoothness + bounce
- Immediate + progressive results*
- Limited-edition scent
Application
Application
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.
Shipping
Shipping
Our team will ship your order within 5 business days. Once your order has been shipped, you will receive a notification with tracking information.

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Good for: Damage
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Good for: Color Care
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Bond Building
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Vegan
“Clinically eliminates odors, reduces oil + keeps working for up to 3 days.”
FREQUENTLY ASKED QUESTIONS
How does the K18 mask work?
The K18 mask works as a treatment to reverse damage in 4 minutes.
What is the K18peptide™?
K18PEPTIDE™ is a patented biotechnology that repairs hair at a molecular level across multiple types of bonds including polypeptide chains and disulfide bonds to reverse damage from bleach + color, chemical services, and heat.
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.