Name: K18 Leave-in Molecular Repair Hair Mask
Brand: K18
SKU: k18-leave-in-molecular-repair-hair-mask-beautytap
Rating: 4.6 (325 reviews)

This at-home leave-in treatment powered by patented K18PeptideTM is clinically proven to reverse hair damage from bleach + color, chemical services, and heat to renew strength, softness, smoothness, and bounce.

3b - Bouncy ringlets

2a - Loose, stretched S-waves

2c - Distinct S-waves with some spiral curls

1b - Straight with more volume

1a - Stick straight

3a - Big, loose spiral curls

0-No hair

1c - Straight with body wave and a couple of visible S-waves, usually the neck or temples

2b - Shorter, more distinct S-waves

3c - Tight corkscrew curls

4a - Tightly coiled S-curls

4b - Tightly coiled, Z pattern curls

4c - Mostly Z-patterned, tightly kinked and less defined curls

I am a professional hair model who has worked with both drugstore and salon level products. While I liked this product, I didn’t LOVE it or notice much difference compared to my other masks and restorative products. This formula felt like any regular leave-in conditioner and didn’t offer any additional performance benefits, which means it's just an addition to your existing hair routine.&nbsp;Also, I wasn't a fan of the scent and wish it had a more luxury fragrance profile like other salon products.I used the product one pump at a time on wet hair for a total of 3 pumps of product, and then followed with my typical hair care routine using TGIN or Camille Rose. I noticed how soft the product left my hands, but I didn’t notice much improvement of softness or bounce of my hair.&nbsp;The Leave-in Molecular Repair Hair Mask is a vegan, color-safe, and cruelty-free formula meant to restore hair health with the patented K18Peptide™, a clinically proven ingredient meant to reverse damage in just 4 minutes. The product claims to heal chemical damage from bleach, color, and heat, as well as restore strength and softness. The formula is a steep price ($75) for only 50mL and I don’t feel that the results were worth the price. There are many other drugstore and salon products that restore and style the hair, and offer much more quantity for a cheaper price.&nbsp;

Hair Experts

Beauty Retail Expert

Beauty Content Creator

Who doesn’t love leave-in conditioners?! Especially the ones that really hydrate and repair your hair! As a certified make up artist in the beauty industry for about seven years now, I enjoy learning and testing all sorts of different types of products to be able to share my experience and knowledge. The K18 Biomimetic Hairscience molecular repair hair mask has already done wonders on my damaged hair. I am very picky on the products that I put in my hair due to all the previous damage, which is why I have to say that this product is one I can swear by. When using this product, I do not condition while in the shower: I only shampoo and then towel dry my hair with my microfiber towel. Afterwards, I place about two pumps in my palm and work from bottom up. I have seen my curls look healthier and more defined since using this product, which is always an A+ for us curly-haired ladies!

Makeup Artist (Freelance)

The K18 Biomimetic Hairscience Leave-in Molecular Repair Hair Mask is a pretty nice product thst lives up to the hype.I'm a huge fan of hair masks because they give me the extra help to keep the length in my hair. The K18 Biomimetic Hairscience Leave-in Molecular Repair Hair Mask has a nice easy to use pump dispenser that dispenses the perfect amount for my hair. The hair mask itself has a great texture and is easy to apply. I find that my hair is instantly transformed after using it. The K18 Biomimetic Hairscience Leave-in Molecular Repair Hair Mask leaves my hair so soft, smooth, and shiny. Because I have an oily scalp, I don't use it more than once a week but adding this hair mask to my hair care routine has helped me with maintaining the length of my hair picture perfect.My hair has never looked healthier so I would definitely recommend the K18 Biomimetic Hairscience Leave-in Molecular Repair Hair Mask

Product Expert Reviews