Molecular repair hair oil
Weightless oil that strengthens, repairs damage + reduces frizz
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.
still have questions? visit our help center
Can i use the molecular repair hair oil instead of the mask?
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.
Does the molecular repair hair oil provide heat protection?
Yes, this oil provides heat protection up to 450°F/232°C.
Will the molecular repair hair oil leave buildup or weigh down my hair?
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
Will the mask block the molecular repair hair oil from penetrating?
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.
Can I mix the oil and mask together?
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.
Boost shine and seal split ends on all hair types—weightlessly.
Highly concentrated formula. Start with 1-3 drops and build as needed.
1. Apply 1-3 drops to towel-dried hair from mid-lengths to ends.
2. For strengthening benefits from the K18PEPTIDE™, wait 4 minutes before styling.
3. Apply 1-3 drops to dry hair as a finisher.
See how K18 unlocks our community's expression
- Frizz Control
- Shine
- Softness
- Smoothness
- Hair Repair
- Jon S.Verified BuyerReviewingMolecular Repair Hair Oil 30 mLI recommend this productAge 55 - 64Hair Concern Color-care, FrizzHair Type Thick/CoarseMy Results Less Frizz, Smoother Hair, Visible DifferenceRated 5 out of 5 stars13 hours agoA little goes along way
This oil gives you a nice sheen. I don’t use much and it adds that
Smoothness to the ends. Give it a try.
KUK18Hair UK11 hours agoThank you so much for your amazing review! We're thrilled to hear that our Molecular Repair Hair Oil gives you that perfect sheen and smoothness. Your support means everything to us! ✨
- Vicki H.Verified BuyerReviewingMini molecular repair hair oil 10 mLI do not recommend this productAge 55 - 64Hair Concern Color-care, Frizz, Dryness, Heat damage, Chemical damageHair Type Fine/ThinMy Results Bouncy Hair, Less Frizz, Visible Difference, Less Breakage, Stronger HairRated 1 out of 5 stars16 hours agoNever received my product
Wouldn’t know!!! I never recieved my product ugh
KUK18Hair UK2 hours agoHi Vicki, thank you for reaching out and we're really sorry to hear that you didn't receive your Mini Molecular Repair Hair Oil. Please reach out to our Customer Care team at hello@k18hair.com with your order details, and we'll be happy to look into this right away.
- Argentina C.Verified BuyerReviewinghair oil deluxe sampleI recommend this productRated 5 out of 5 stars19 hours agoBest oil
My dark brown curly hair gets re-touched and dyed to copper several times a year, and these have helped keep it SOFT and HEALTHY.
KUK18Hair UK18 hours agoThank you so much for your amazing 5-star review! We're thrilled that our Hair Oil Deluxe is keeping your beautiful copper curls soft and healthy. Your support means everything to us! 💖✨
- Argentina C.Verified BuyerReviewingMolecular Repair Hair Oil 30 mLI recommend this productAge 35 - 44Hair Concern Chemical damage, Heat damage, Color-care, Split-Ends, FrizzHair Type Fine/Thin, Curly/Coily, Medium DensityMy Results Less Breakage, Soft Touchable Hair, Visible Difference, Defined Curl/Wave Pattern, Less FrizzRated 5 out of 5 stars19 hours agoBest oil!
My dark brown curly hair gets re-touched and dyed to copper several times a year, and these have helped keep it SOFT and HEALTHY. A little goes a LONG WAY, so literally start with what it says- a couple of drops.
KUK18Hair UK18 hours agoThank you so much for your amazing review! We're thrilled to hear that our Molecular Repair Hair Oil is keeping your beautiful copper curls soft and healthy. Your support means everything to us! 💖✨
- elaineReviewinghair oil deluxe sampleI recommend this productRated 5 out of 5 stars22 hours ago5 Stars
Love the shine it gives my hair and great for flyaways too and how it’s protecting my hair I love all k18 are heat protectors so heat is not a problem with these great products.
KUK18Hair UK2 hours agoWe love hearing this! 💚 So happy you're enjoying the shine and smoothness the Molecular Repair Oil brings to your hair. There's nothing better than healthy-looking, glossy hair with fewer flyaways! Thank you for making K18 part of your hair care routine!