Free UK shipping over £25 15% off your app order Sign up for email exclusives Earn Cult Status Points
Unlock a £20 Gift Card with £100 spend sitewide
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

4.56 stars out of a maximum of 5

5 stars rating 884 reviews

4 stars rating 230 reviews

3 stars rating 81 reviews

2 stars rating 25 reviews

1 stars rating 21 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.

Amazing

5 stars out of a maximum of 5

This is a great product my hair feels great and it’s really improved the condition 

by Lesley Verified Purchase

Was this helpful?

Amazing product

5 stars out of a maximum of 5

1st time I was introduced to it by my hairdresser, then I had to buy it again. It’s the holy grail for damaged, bleached hair. Tbh I tried every single product from Olaplex and this is beyond them.

by Sandra Verified Purchase

Was this helpful?

Brilliant

5 stars out of a maximum of 5

Amazing , hair silky smooth and so shiny and heathy , I have quite thick just pass my shoulders hair and I’d say I use roughly 5-6 pumps of product , love this product and would buy again.

by Victoria Verified Purchase

Was this helpful?

Amazing product if you stick with it

5 stars out of a maximum of 5

When I first started using this product I had a lot of damage from bleaching my hair. Because of this I relied HEAVILY on deep conditioners and heavy products to give the appearance of healthier hair, so going without conditioner was daunting. First application I was sceptical it didn’t feel as soft and “healthy” as I was used to with thick conditioners, but after using it for 6 consecutive washes ( and the directions given for maintenance)  I have to say I noticed a massive difference! it not only started giving the appearance of healthier hair, I could also feel and see the difference! This is definitely a product you have to get used to and persist with!  It’s expensive but the science works and it’s definitely saved my over processed hair  

by Beck Verified Purchase

Was this helpful?

Fab

5 stars out of a maximum of 5

Fablous was impressed so much my hair is so much better

by Karen Verified Purchase

Was this helpful?

Miracle

5 stars out of a maximum of 5

Was influence by someone on Instagram to buy and it’s so good. Feels a little odd to not use conditioner in the shower but it has literally bought my hair back to life! Make sure you follow the instructions and honestly your hair will thank you. It is expensive but a little does go a long way l. I will definitely be re ordering this. 

by paula Verified Purchase

Was this helpful?

Dead to Alive

5 stars out of a maximum of 5

Although a considered purchase, after the first use my hair felt moisturised, smoother, thicker and healthier. I washed with a normal shampoo making sure to skip the conditioner, squeezing out excess water before two pumps of K18. I waited 4 minutes then applied Colour Wow Kale Cocktail and blow dried my hair. The crunchiness from over dying and heat diminished instantly and now after using it six times in a row my hair feel alive again and not dead like before! I love it just wish it was cheaper x

by Conbon Verified Purchase

Was this helpful?

Fantastic product

5 stars out of a maximum of 5

I have higlighted dry hair. I have used Olaplex previously but i find this to be much better for my hair. Does not leave it dry, and the effect was immediately better. Had the salon treatment when doing the highlights and bought this from Cult after the salon visit . Could not be happier, hair looks a lot healthier, i find it les dry and easier to style. In my case, i prefer this to Olaplex. So glad i found it.

by Salome Verified Purchase

Was this helpful?

Excellent

5 stars out of a maximum of 5

Expensive but you only need the smallest amount and leaves my hair looking sleek and shiny!

by Monika Verified Purchase

Was this helpful?

Not worth the hype

1 stars out of a maximum of 5

I usually use olaplex but I thought I’d give this a go due to the hype but I was sadly disappointed. Tbh it’s no better than using a standard conditioner I definitely won’t be purchasing again. 

by Lisa Verified Purchase

Was this helpful?