best seller
Rated 4.7 out of 5 stars
618 Reviews
K18 molecular repair hair oil
Weightless oil that strengthens, repairs damage + reduces frizz
pairs well with
full-size leave-in molecular repair hair mask
4-minute leave-in treatment to reverse hair damage
Rated 4.7 out of 5 stars
7,825 Reviews
Description
This biotech-engineered weightless oil works on all hair types to strengthen, repair damage, reduce frizz at two levels of the hair fiber, and improve shine.
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We recommend using the oil with the mask for maximum molecular repair with additional styling benefits. Think of the mask as a damage repair treatment after washing your hair. The oil is for smoothing, styling and strengthening after the mask, and can be used on damp and dry hair.
Yes, this oil provides heat protection up to 450°F/232°C.
No, it will not leave buildup or weigh down your hair. This weightless oil is powered by intentional ingredients to reduce frizz-causing damage on the molecular level inside the hair fiber, while natural oils work on the surface of hair without weighing it down.
Plus, you don’t need much of this highly concentrated formula to see results, just use 1-3 drops and build as needed. If you’re concerned about buildup, use our detox shampoo to remove 99% of product buildup after just 1 wash*.
*Disclaimers
Plus, you don’t need much of this highly concentrated formula to see results, just use 1-3 drops and build as needed. If you’re concerned about buildup, use our detox shampoo to remove 99% of product buildup after just 1 wash*.
*Disclaimers
No, the mask will not block the molecular repair hair oil from penetrating. The mask is a highly concentrated treatment without any fillers so it won’t block the oil from
penetrating. Like layering different skincare products, the oil can be layered on top of the mask without impacting its performance.
Instead of mixing the oil and mask together, get the most effective repair and styling benefits by using the mask first, waiting 4 minutes, and then applying the oil.
how to use it
molecular repair
hair oil vs. mask
Do you use one over the other? Both? Glad you asked! Both are meant to be used at different parts of the routine but were created to work together for maximum impact
molecular repair oil
what it is: weightless, silicone-free hair oil
what it does: reverses damage that causes frizz long-term while immediately smoothing flyaways, adding shine, and reducing split ends
when to use: on damp or dry hair throughout styling
what it does: reverses damage that causes frizz long-term while immediately smoothing flyaways, adding shine, and reducing split ends
when to use: on damp or dry hair throughout styling
molecular repair mask
what it is: leave-in treatment
what it does: reverses hair damage in 4 minutes for lasting + progressive results
when to use: after shampoo, on damp, towel-dried hair before styling
what it does: reverses hair damage in 4 minutes for lasting + progressive results
when to use: after shampoo, on damp, towel-dried hair before styling
the K18 difference
Feel what’s possible with fewer steps, less waste + less time.
how molecular repair compares
how K18 works
Traveling into the innermost layers of hair, our K18PEPTIDE™ renews strength along the width AND length of hair for lasting strength where it matters.