K18 Biomimetic Molecular Repair Leave-In Hair Mask 1.7oz + Hair Oil 1oz Duo
This powerful repair and styling duo combines the transformative benefits of the K18 leave-in molecular repair mask and the biotech-engineered weightless hair oil, both powered by the patented K18PEPTIDE. The leave-in treatment mask works on the molecular level to reverse damage from bleach, color, chemical services, and heat in just four minutes—restoring strength, softness, smoothness, and bounce with immediate and lasting results. Paired with it, the lightweight hair oil strengthens and repairs damage across all hair types while reducing frizz at both the inner and outer levels of the hair fiber. The K18PEPTIDE penetrates deeply to address the root causes of damage and frizz, while a blend of natural oils—including avocado, sunflower, hemisqualane, and squalane—nourishes and smooths.
Product Specifications
| Component | Details |
|---|---|
| Leave-In Hair Mask | 1.7oz |
| Haair Oil | 1oz |
| Active Ingredient | K18PEPTIDE |
| Natural Oils Included | Avocado, Sunflower, Hemisqualane, Squalane |
| Key Benefits | Reverses damage from bleach, color, heat, and chemicals; reduces frizz; restores strength, softness, smoothness, and bounce |
FAQ
How long does it take for the leave-in mask to show visible results?
The leave-in mask begins to reverse damage within four minutes and provides immediate results in strength, softness, smoothness, and bounce.
Can this duo be used on colored or chemically treated hair?
Yes, the K18 leave-in mask is specifically formulated to repair damage from bleach, color, chemical services, and heat.
Does the hair oil help with frizz reduction?
Yes, the lightweight hair oil reduces frizz at both the inner and outer levels of the hair fiber.

Rachel Fraser –
Used this duo after a recent coloring session. The mask worked instantly—my hair felt stronger and smoother. The oil added shine without weighing down the strands. Great for daily use after styling.
Jan Ince –
After using the mask and oil for two weeks, my hair has noticeably less frizz and feels more resilient. Works well on both straight and wavy hair types.
Jasmine Young –
The repair results are impressive, especially after heat styling. The oil is light and doesn’t leave a greasy feel. Slight improvement in manageability after just one application.
Evan Coleman –
I’ve tried several leave-in treatments, but this one stands out. The K18PEPTIDE seems to target the root of hair damage. My hair feels healthier and more defined.
Christopher Carr –
Works well for damaged hair. Took a few days to see full results, but the smoothness and softness are noticeable. Would recommend for chemically treated hair.