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K18 Leave-In Molecular Repair Hair Mask

Reviews For K18 Leave-In Molecular Repair Hair Mask

Filtered by: Star Rating: 5 stars Clear Filters

358 Reviews
August 24, 2025

Smooth and glossy hair

The results just get better the more you use it.

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Vita

Straight, Color treated hair

Verified Purchase

0 people found this helpful

August 02, 2025

Great to get the shine and smoothness back!

Transformed my hair from straw brittle ends to very smooth ends. Works well and lasts a long time

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LovelySkin Customer

Verified Purchase

0 people found this helpful

July 23, 2025

Noticeable difference

This truly has made a difference in my hair. I have baby fine hair and this has added so much resilience after being fried by bleach. It’s expensive, but worth it!

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LovelySkin Customer

from Colorado

Straight hair, Damage & split ends

Verified Purchase

1 person found this helpful

May 30, 2025

Repeat purchase

I always have this and will continue to buy it. It helps with damaged hair and I feel a significant difference after one use.

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LovelySkin Customer

Verified Purchase

1 person found this helpful

April 26, 2025

I really like this!

I really like this product. I have added in some new hair products over the last couple of years (including Olaplex and a Redken serum) and plan to keep using this. It is easy to use and incorporate into my hair routine.

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LovelySkin Customer

Verified Purchase

0 people found this helpful

February 13, 2025

For the impatient..your new bff

This is a perfect way to dramatically improve your hair without having to sit through a traditional hair mask that you have to leave in for 15-20 min and rinse out. All it takes is a few sprays ( for my shoulder length hair) after you get out of the shower and wait 4 min while you do other things .. and you are all set! I spray one spritz at a time into my palms (2 total) and work it into sections of my hair for even distribution. It takes less product than you think so a bottle lasts awhile. It even shortens your shower times since you don’t use a conditioner prior. I’m 48, and my highlighted hair is starting to look as healthy as it did in my 30’s. My husband told me yesterday that my hair looked “bouncy”.. and I didn’t even know that word was in his vocabulary. Buy this- it works .

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SaraR

Verified Purchase

1 person found this helpful

December 03, 2024

I’m a believer

I was so skeptical of this stuff but I finally tried it and… I’m sold. It has helped repair lots of damage from coloring over the years. After learning about how it actually works, it makes sense! Super easy to use as well.

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EmilyW007

Verified Purchase

1 person found this helpful

July 20, 2024

Good results

So far this is my favorite special treatment. I feel like it improves my hair annd I like that you don’t need to rinse it. Time saver.

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Teacherkh

Verified Purchase

1 person found this helpful

July 19, 2024

Love

I love this! It has helped my hair to not break and because of that my hair has been able to grow out quickly. Have repurchased several times and will continue to do so.

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LovelySkin Customer

Verified Purchase

0 people found this helpful

July 15, 2024

Amazing

My hairdresser recommended this mask and I am very pleased. Amazing product will definitely buy it again. Game changer.

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LovelySkin Customer

Verified Purchase

0 people found this helpful

July 12, 2024

NEEDED

I get my hair bleached and this is a must.

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LovelySkin Customer

Verified Purchase

0 people found this helpful

June 26, 2024

Best thing I’ve ever purchased for my hair

I will never not use this product. I use it after every wash and my hair has never been healthier. Holy grail product for me.

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Beth1313

Verified Purchase

0 people found this helpful

March 04, 2024

Doesn’t make thin hair greasy

I used this product according to the label and it’s working great. I have fine/thin hair and it’s not weighed down at all. I use 1 to 2 pumps each time I use it. I can see less breakage where I wear my hair tie.

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HarmonyZ

Verified Purchase

0 people found this helpful

February 27, 2024

One of The Best Products for Damaged Hair

k18 is one of the best products in the market for damaged hair. If you have highlighted, double processed or heat styled hair, you need this product. Make sure to apply it on towel dry hair, not to use conditioner prior, and to wait the indicated time prior to proceeding with other products or styling. This doesn't replace protein treatments, other bond repair products or serums. K18 works in a totally different way to heal damaged hair and makes a great addition to your monthly hair routine.

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LovelySkin Customer

Verified Purchase

0 people found this helpful

February 01, 2024

Happy!

After following instructions I am now down to maintenance treatments. I do notice a difference in my hair after using product. I do follow with conditioner and am happy with the results.

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LovelySkin Customer

Verified Purchase

0 people found this helpful

January 03, 2024

Love

I have dry and damaged hair, this product is making me like my poor hair again.

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LovelySkin Customer

Verified Purchase

0 people found this helpful

December 01, 2023

LOVE

This is the only hair repair treatment I’ve used that I’ve actually seen and felt a difference in my hair. Wish it came in a bigger size than 1.7 oz though.

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Hurley

Verified Purchase

2 people found this helpful

November 09, 2023

Worth it

I started using this a little over a year ago. I use it once a week and it lasts me about 3 months. I have long hair and I’ve noticed a lot less breakage which has allowed me to go longer between hair trimming. I’m 48 and my hair hasn’t been this long since I was 26! Highly recommend!

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Fanchera

Verified Purchase

0 people found this helpful

September 25, 2023

So worth the price

I purchased this product about 6 months ago, and I still have product left. I have incredibly long hair, and I use the product as directed and it has lasted so long. I have noticed an improvement in the breakage and frizziness of my hair and plan to continue using!

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LovelySkin Customer

Verified Purchase

0 people found this helpful

August 06, 2023

Must have for damaged hair

My highlighted hair is frizzy and prone to split ends. My stylist recommended this product to me as she uses the system in her salon. My hair feels stronger and softer after using this.

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LovelySkin Customer

Verified Purchase

1 person found this helpful


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