Free UK shipping over £25 15% off your app order Sign up for email exclusives Earn Cult Status Points
NEW & EXCLUSIVE :Save over 60% with our active-powered edit of Paula's Choice favourites
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


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:

£57.00

Other Customers Bought

Customer Reviews

4.56 stars out of a maximum of 5

5 stars rating 960 reviews

4 stars rating 249 reviews

3 stars rating 85 reviews

2 stars rating 26 reviews

1 stars rating 22 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.

Good Mask for Oily Hair

4 stars out of a maximum of 5

I have oily & colour-treated hair and I feel that this mask makes my hair soft and smooth without weighing it down. Needs a bit of persistence so don't expect magical results with one-time use.

by Vanessa Verified Purchase

Was this helpful?

Yes from me

5 stars out of a maximum of 5

So far so good. Hair definitely looks better.

by Agne Verified Purchase

Was this helpful?

Amazing product!

5 stars out of a maximum of 5

I absolutely love this product. I bought the 15ml and once it ran out I re-bought it. My hair has never felt so soft. I colour my hair and it can get very greasy at the roots and dry at the ends, but since I started using this and the K18 shampoo I have only needed to wash my hair twice a week. It’s also really quite to use, unlike lots of other treatments. The only downside is it’s very expensive. 

by April Verified Purchase

Was this helpful?

Amazing

5 stars out of a maximum of 5

I cannot believe how good this is. Even after just one use, my hair felt and visibly looked in better condition. After many uses, it's helped to improve my damaged hair. Surprisingly, it lasts a long time and a little goes a long wat. This is a staple in my haircare routine.

by Jess Verified Purchase

Was this helpful?

Lovely results

4 stars out of a maximum of 5

Great way to try K18…perfect starter size for 4-6 treatments. Good initial results, but I think I will have to purchase the full size to really see a difference.

by Christina Verified Purchase

Was this helpful?

THE product your hair needs!

5 stars out of a maximum of 5

After going from brunette to blonde my hair was left very damaged (stretchy like gum) by an hairdresser who didn’t respect hair health. K18 in 6 washes saved my hair from gum to normal (dry hair). Since then I’ve never stopped using it and I have just purchased my second bottle to keep the maintenance mode. It’s very tempting to put more product but your hair really just needs 1-2 pumps each side if you have long/thick hair. As this product is very heavy on protein I always make sure to combine protein free shampoos and conditioner. If you have to pick one product to invest for your hair health - this is the one!

by Mafalda Verified Purchase

Was this helpful?

Effective

5 stars out of a maximum of 5

My initial concern with this leave in conditioner was that I have  dry coloured hair that usually needs lashing of conditioner during hair washing , to enable a smooth finish.  On application, the directions suggest 3pumps , I used 6 and this worked for me. After 4 hair washes  applying K18 as directed, my hair had certainly improved. It was so effective that although somewhat expensive I will repurchase. 

by Cheryl Verified Purchase

Was this helpful?

A haircare must buy

5 stars out of a maximum of 5

One of the best hair products out there, glad I discovered this and stopped wasting my time and money on Olaplex. It's expensive but even a few uses will hugely improve your hair

by ella Verified Purchase

Was this helpful?

Excellent

5 stars out of a maximum of 5

Great product. Really helped my damaged hair

by Zoe Verified Purchase

Was this helpful?

Best hair repair!

5 stars out of a maximum of 5

This product has saved my hair! I love it

by Louise Verified Purchase

Was this helpful?