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

4.56 stars out of a maximum of 5

5 stars rating 887 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.

New staple hair product

5 stars out of a maximum of 5

I have used this 4-5 times in a row now on my healthy hair journey. I was skeptical at first but I can safely say my hair looks and feels the best it has in years and almost unrecognisable. It actually feels soft and looks healthy and shiny. I will be repurchasing a big bottle now my medium is running out.

by Hayley Verified Purchase

Was this helpful?

Great mask

5 stars out of a maximum of 5

I like this hair mask, makes my hair feel stronger and hydrated without weighing it down

by Nat789 Verified Purchase

Was this helpful?

Amazing

5 stars out of a maximum of 5

I started using this after using Olaplex for years which transformed my hair but I still had some small areas of damage that weren’t improving so decided to give this a go. It’s made a real difference and I can see it starting to improve those damaged areas already. My hair feels thicker and healthier and it’s so quick to use compared to Olaplex! I’ll use both but so happy I tried this. Highly recommend.

by Leanne Verified Purchase

Was this helpful?

Noticeable difference to my hair

5 stars out of a maximum of 5

I’ve used this as instructed on the packaging and used it after each wash after bleaching for 4 times consecutively and I have to say I’ve noticed a massive difference in my hair , it was dry and hard to brush through before wheras now it has restored its softness and feels a lot more healthier. Will repurchase the large bottle

by Joanna Verified Purchase

Was this helpful?

Works well

4 stars out of a maximum of 5

This definitely helps improve dry and damaged hair. A brilliant product, just a shame it’s so expensive!

by Katie Verified Purchase

Was this helpful?

Great

4 stars out of a maximum of 5

One of the only hair products I have repurchased, makes a massive difference to my dry and damaged hair. Only giving four stars for the price point as I think Its quite expensive for the amount of product you actually get.

by Jme Verified Purchase

Was this helpful?

Repurchase

5 stars out of a maximum of 5

Love this propane last ages. I use a clarifying shampoo and then this once a month. Remember and rub vigorously between palms before application. Skipping the conditioner before use feels wrong but once this is in your hair it feels amazing

by Natalie Verified Purchase

Was this helpful?

Amazing Hair science

4 stars out of a maximum of 5

Really enjoy using K18, but you got to follow the instructions correctly and you won’t be disappointed. It’s a treat when my hair needs some TLC only 4 stars due to costing

by **Rachel51** Verified Purchase

Was this helpful?

Transformation

5 stars out of a maximum of 5

I’d seen so many reviews about this product but couldn’t make my mind up, but after careful research on what’s the best way to use it I can say that it has been really helpful to strengthen my hair, I’m so happy I purchased it!

by Elena Verified Purchase

Was this helpful?

Worth it

5 stars out of a maximum of 5

Expensive but so worth it. Saved my hair when it was fried and the bottle does last a long time if you use it once a week.

by Rosie Verified Purchase

Was this helpful?