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


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 939 reviews

4 stars rating 246 reviews

3 stars rating 84 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.

Very good

5 stars out of a maximum of 5

I do really like this, it definitely does what it says, the only thing I don't like is that you can't condition your hair first, my hair gets more knotty without it.

by Claire Verified Purchase

Was this helpful?

Think it works

4 stars out of a maximum of 5

I have thin damaged areas of hair around my face framing layers and using k18 for a month seems to have made them feel and look less dry and less damaged, definitely will keep using to see if this continues 

by Nina Verified Purchase

Was this helpful?

Miracle product for fried hair !

5 stars out of a maximum of 5

I've used this ever since my hairdresser recommended it . It has worked wonders on my super damaged hair . Couldn't be without it now !

by Zoey Verified Purchase

Was this helpful?

No difference

1 stars out of a maximum of 5

So expensive and seen no difference after several uses 

by A Verified Purchase

Was this helpful?

Great product

5 stars out of a maximum of 5

Love how my hair feels after using this. Protects from the inside out. Great product!

by Leanne Verified Purchase

Was this helpful?

Amazing

5 stars out of a maximum of 5

My bleached damaged hair lived this, splurged on the larger size after using sample. Something I NEVER do

by megan Verified Purchase

Was this helpful?

Love this

4 stars out of a maximum of 5

My hair feels so soft after using this. Have been using for about a year now. Definitely recommend.

by Leanne Verified Purchase

Was this helpful?

Love this!

5 stars out of a maximum of 5

Was recommended this by my hairdresser and I’ve used it ever since! It helps keep my waist length heart healthy after bleaching, just make sure to follow the instructions carefully, and not use conditioner with the leave in mask so it is able to absorb properly? 

by Hannah Verified Purchase

Was this helpful?

A healthy hair boost for those dry spells!

5 stars out of a maximum of 5

Party season always gives me hair challenges. I have blonde hair to my waist, which gets blow dried, wanded, clipped, pinned and bunned! K18 is my go too repair job. I still use Olaplex, Innoluxe at the salon and Pkingsley. But 3 times a year I K18 for a few weeks to really treat my hair! Dont recommend using it all the time, but as a health boost when needed, its a 5 star treatment! 

by Viki Verified Purchase

Was this helpful?

great product

5 stars out of a maximum of 5

This leave in hair mask makes my hair feel incredibly soft and nourished! will repurchase again

by Hannah Verified Purchase

Was this helpful?