Free UK shipping over £25 15% off your app order Sign up for email exclusives Earn Cult Status Points
Get up to 15% OFF your first haul with code FIRST15
K18 Biomimetic Hairscience

K18 Biomimetic Hairscience Leave-in Molecular Repair Hair Mask 15ml

You'll earn 30 Status Points with this product

Discover Cult Status

£30.00

Or 4 interest free payments of £7.50 with clearpay


In stock | Usually dispatched within 24 hours

Frequently Bought Together

K18 Biomimetic Hairscience Leave-in Molecular Repair Hair Mask 15ml

This item

K18 Biomimetic Hairscience Leave-in Molecular Repair Hair Mask 15ml

£30.00

Total Price:

£69.00

Other Customers Bought

Customer Reviews

4.55 stars out of a maximum of 5

5 stars rating 855 reviews

4 stars rating 223 reviews

3 stars rating 81 reviews

2 stars rating 25 reviews

1 stars rating 20 reviews

Top Customer Reviews

Thanks for sharing your thoughts! Please remember that results will vary from person to person. We're proud to say that all customer reviews are independent, authentic and do not represent the views of Cult Beauty or The Hut Group.

Helped my damaged hair

4 stars out of a maximum of 5

Expensive but made a real difference when I used it on my dry, damaged hair. Would recommend!

by Katie Verified Purchase

Was this helpful?

Really works!!

5 stars out of a maximum of 5

I got the 15ml size to try but think I will have to buy the full size now! I’m so impressed with this and it has sorted by breakage after using it 4 times. I have blonde dyed hair that has a lot of damage and this has improved it already. It’s not greasy or heavy on my fine hair.

by Eica Verified Purchase

Was this helpful?

TLC for your hair

5 stars out of a maximum of 5

I was a bit sceptical at first as it was a small bottle and not cheap. However, you only need such a small amount so will last ages. It was like giving y hair a complete spa day. It left my hair feeling soft and a beautiful shine. At 61 i don’t offer get that shine i used too. Totally received this for a TLC for your hair.

by JCY Verified Purchase

Was this helpful?

Saved my hair

5 stars out of a maximum of 5

I had bleached my hair several times in a row. As a result my hair was brittle, breaking and just dull. After using k18 a couple of times i noticed a HUGE difference. Now i use it once every couple of weeks for maintenance. Its the best.

by Dede Verified Purchase

Was this helpful?

Lives up to the hype

5 stars out of a maximum of 5

Has transformed my hair. K18 have said you can condition and rinse after 4mins and thats what jve done. Only use every other wash now

by Nat Verified Purchase

Was this helpful?

Believe the hype

5 stars out of a maximum of 5

This product is hyped, for a reason. I bleached my hair for the first time and my hair was not happy. I started using this and it’s like I never bleached it. I leave it in for 4 mins then condition my hair as normal. Soooo good

by Ruth Verified Purchase

Was this helpful?

Worth it

5 stars out of a maximum of 5

Expensive but worth it as the difference is huge on my bleached hair when I have used this product

by Katie Verified Purchase

Was this helpful?

A must have for blondes

5 stars out of a maximum of 5

Will constantly repurchase this! It’s expensive for such a small bottle and you think the recommended 3 pumps won’t go far but it really does! What a difference it makes to my blonde damaged hair! Must have if you want to care, repairs and strength your hair

by C Verified Purchase

Was this helpful?

Wow!!

5 stars out of a maximum of 5

Wow this hair treatment is incredible, after years of bleaching my hair causing damage. I can finally see my hair becoming healthy again! It’s expensive but so worth it!

by Lulu Verified Purchase

Was this helpful?

love it

5 stars out of a maximum of 5

love it so makes hair soft and easy to use

by Jess Verified Purchase

Was this helpful?