

🧴 Unlock molecular magic for hair that speaks success.
The Mini Leave-In Molecular Hair Mask by K18 is a cutting-edge 15ml treatment that reverses hair damage caused by bleach, heat, and chemical services in just 4 minutes. Powered by patented K18 Peptide technology, it penetrates deep to restore hair strength, softness, and bounce without rinsing or heavy buildup. Ideal for professionals seeking salon-quality repair in a compact, easy-to-use formula.


















| ASIN | B09HR5KSR8 |
| ASIN | B09HR5KSR8 |
| Best Sellers Rank | 568 in Beauty ( See Top 100 in Beauty ) 1 in Hair Masks |
| Brand | K18 |
| Colour | White |
| Country of origin | USA |
| Customer Reviews | 4.2 4.2 out of 5 stars (26,467) |
| Customer reviews | 4.2 4.2 out of 5 stars (26,467) |
| Date First Available | 26 Sept. 2022 |
| Format | Cream |
| Item dimensions L x W x H | 35 x 35 x 81 millimetres |
| Item model number | K18-31007 |
| Item model number | K18-31007 |
| Item weight | 1 Ounces |
| Manufacturer | K18 |
| Manufacturer | K18 |
| Package Weight | 0.05 Kilograms |
| Package dimensions | 8.1 x 3.7 x 3.7 centimetres |
| Product Dimensions | 3.48 x 3.48 x 8.08 cm; 28.35 g |
| Product Dimensions | 3.48 x 3.48 x 8.08 cm; 28.35 g |
| Scent | Fresh |
| Special features | Molecular Repair |
| Speciality | Natural,Natural―so |
| Volume | 1 Fluid Ounces |
J**A
This works if you actually need it.
I think alot of people use K18 without understanding if they need it or who it is for. My hair at one time felt really dry and I asked my hairdresser about K18 and she stated that I did not need it K18 and is it is a product designed for damaged hair. Another occasion I had really bad heat damage on my side fringe caused by a combination of bleach and GHD's. It couldn't be cut out because of where it was and it would have looked odd. At that point I was advised to use K18. A little goes a really long way. It is also not designed to be used for an extended period with every wash. It is a treatment. If you do not apply it correctly then it will not worked. If you apply it without towel drying your hair or if you have used a conditioner beforehand it will not work. The conditioner prevents K18 from penetrating the hair and doing it's job. When I applied it to my very frazzled side fringe within a few uses it had significantly reversed the damage. I have found it has done more for my hair than Olaplex, even though they do very different things. K18 fixes my hair far more effectively than Olaplex has ever prevented any damage from bleaching. If you overuse this product or use it when you don't need it then it will actually make the condition of your hair worse. It is very expensive but it is only supposed to be used to reverse the damage then you should stop using it. If your hair is in a worse condition, then it is likely you didn't need it and if it hasn't done anything its possible you haven't used it correctly. Also Amazon is an official stockist of K18 so as long you haven't purchased it from a seller that isn't K18 then you will get a legitimate product. In short, it's pricey but effective as long as you use it right and actually need it.
A**R
Great product
Product is great for my hair as it is very dry and broken
J**N
Don't hesitate
Wow wow wow. I really wish I did a before picture! I went to get my hair done a couple of weeks ago and they couldn't do it because my hair has been damaged by keratin Brazilian blow dry. My hair had next to no elasticity and I thought I would have to get it all cut off. I did some research and thought I would try this, wasn't sure because it's so expensive but my god am I glad I did!! I did 2 pumps on slightly damp shampooed hair and left it for around 10 mins before touching it. My hair is incredible, you would never have thought there was an issue to start with, it looks and feels so healthy and glossy, and after the first use! Would absolutely recommend and will be making it my go to. My hair isn't light weight but isn't weighed down eitherand there is no smell. 100% effective.
M**S
NO PRODUCT IN BOTTLE
DO NOT BUY!!! Such a tiny bottle and pump did not work (pumped about 300 times and nothing) I tried to return and they would not let me just emailed me back saying I have to puncture the bottom of the bottle so that the pump will work. I did so and A pea sized amount of product came out and nothing else. Led to believe there is no product in the bottle.
V**Y
Softer, Shinier Hair
This hair mask is really nice. It makes hair feel lovely and soft and the styling seems to last longer. It is quite expensive but I find it really good.
L**V
Good, but super expensive
Good product, but OMG, it is so expensive! And it lasts so quickly.
H**S
Not sure...
I'm really not sure about this product. I do, however, have opinions. Ultimately the jury's out about the benefits and healing treatment on the hair long term, I have a few more uses left. I think my thoughts (which are complicated) could best be summed up as pros and cons for brevity's sake. Pros: - I fried my hair trying to add an auburn sheen - I used to dye my hair a lot and should have known better than to try again, but I was not prepared for the frizz I unleashed! Since the 2nd-or-so K18 application, my frizz is a lot less (but NOT gone!) - My hair does feel very soft - Frying my hair drastically reduced my natural curls, K18 may have helped start to bring these back - however changing my conditioner may have changed that too. Cons: - Price. Much like Olaplex, I feel this is very, very overpriced for what you get. The changes are not THAT amazing, and the amount of product is criminal. - Packaging. £30 for a 15ml, which is in an air-tight plastic pump that you cannot open to get any product left in the tube. I'm fully willing to bet there's a lot of product wastage there! - Hype. Hype never does anything any favours long term... yes, I think it helped with my damage from dying, but nothing's a miracle product and YMMV as to how much this helps you or not, how much a difference it makes or not. Personally it did make a difference for me, but I still expected more from the hype. - Long term benefit. I'm not sure about the long term pros of this product. - Method. How you're meant to use this product is very strict and I don't think it will work that well if you don't follow the instructions. Personally, my hair NEEDS a good conditioner, so having to omit conditioner... not so great. Also they recommend using it for multiple washes in a row - my hair cannot go multiple washes with shampoo each time and no conditioner each time, no way. And then there's the cost of using it for each wash, multiple washes in a row! - Amount. Goes back to price. I don't have masses of hair but I do have thick, longish hair and I could not make the amount they suggest stretch through all that. I had to use more, and that gets £££ as you burn through product. Ultimately, it's not a miracle product. It's a fairly decent product IF you have hair damage from chemical/heat, but if you're battling with just frizzy/thirsty/etc. hair I don't think it will do much. I do think the amount it will help you varies from person to person by a lot. And I really do think rave reviews, hype and marketing oversell how beneficial this product is. It is very expensive for what it is, and I think if you know your hair type and needs and have time to research or money to try new things, you can get better products which, if not cheaper, are at least more targeted for what you specifically need. It is marketed as a long term use product which is just not accessible price-wise for many people, myself included, and I don't know if the benefits will get any better than what it has already done for my hair. But it did help with damage in my specific circumstances - not to a miracle level but to a noticeable level. If you have the disposable income AND have chemical/heat damaged hair, give it a go. I would not splurge on a big size to begin with though, and I would be very, very realistic about the results and cost-to-impact you are going to see.
M**S
100% worth buying it
Unfortunately for my bank account, it's amazing. My hair was breaking a lot due to bleaching and this helped so much, it's unreal. I'd leave so much hair in the shower before and now it's a few odd strands of hair. 100% worth it, even though the price hurts a bit.
C**N
Es muy caro para la cantidad de producto que viene pero merece la pena. He sufrido varios crímenes contra mi pelo este año y me está ayudando a recuperar el buen aspecto. Una vez que el pelo está estropeado es difícil repararlo pero al menos si que aparenta más sano. Lo recomiendo.
R**N
Second purchase now, and is impressive when using and left in hair as recommended. Styles well, and leaves hair soft and silky as opposed dry and bushy. However, the next day you would never know, so undecided if would purchase again a third time.
S**A
P**T
This product is actually worth the price. You can see improvement in your hair from the first application and it keeps getting better each time. My hair feels like it used to feel when I was young. Shiny and smooth. Very satisfied. Will buy again.
I**O
fortalece bastante. com certeza vou comprar de novo.
Trustpilot
2 weeks ago
1 month ago