Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, Colour, Chemical Services & Heat

Very expensive product, but it has worked on my hair. I have tried so many other well known brands, not quite as expensive hair repairing treatments and my hair was still in terrible condition from bleaching, It improved while having it coloured at a hairdressers, but I was unable to afford regular visits and reverted back to colouring my self, unfortunately my hair is not great on the top from over bleaching catching other strands of hair while attempting to colour my roots only. K18 leave in treatment is really good and has helped my hair, I am telling myself it's worth it in the long run, if I add up what I have already wasted my money on so far trying products claiming to repair your hair. Very happy this product is actually helping my hair and improving the condition, it's a Shame it is so expensive though.

I don't normally leave reviews and I would also never normally spend this much on such a small amount of product, but my hair is extremely damaged from lightening / dyes and straighteners. After one use, my hair is visibly improved and feels so much better. Highly recommend

I was very curious to try the K18 Leave-In Molecular Hair Mask because my hair has been through a lot: bleach, colour, and heat styling. After a few uses, I can honestly say it does make a difference, but it’s not exactly a miracle in one wash. First, it’s important to follow the instructions: shampoo, skip conditioner, towel-dry your hair, and apply a small amount. You really only need a tiny pump. The product feels light and not greasy, which I like, and it doesn’t weigh my hair down. After about 3–4 uses, my hair started to feel stronger and less brittle, especially on the ends where bleach damage is the worst. It doesn’t make the hair super silky like a traditional mask, but it improves the structure of the hair over time. My hair feels healthier and looks a bit smoother. The downside is the price for such a small bottle. Also, if you’re expecting instant softness like a regular deep conditioner, you might be disappointed because that’s not really what this product is designed to do. Overall, it’s a very interesting treatment for damaged hair and I can see why it’s popular. It takes consistency, but it does help improve the strength of over-processed hair

Tiny tiny bottle so be aware of that! But you only need a few pumps when you use it. It’s a heavy investment but worked right away to recover my hair.

Don't waste your money Have used 5 times now to give this product a chance and my hair feels like straw. It's noticeably frizzier and a lot of breakage has occured. It has done nothing it's advertised to do. Very chemical smell and you need to be in a well ventilated room due to the steam and smell that comes off your hair. The only thing that's changed is my bank balance.

This was recommended by my new hairdresser to help get my hair back into better conditioner. After the first use I was surprised how good my hair feels. A little definitely goes a long way. You use your normal shampoo, no conditioner, towel dry hair and then apply a few pumps of the k18. It's recommended to initially use this for 4-6 consecutive washes then every 2-4 weeks for maintenance. I'm hoping this will be one my holy grails on my hair care journey! Only four stars given as I haven't used it long enough to determine if it's going to help my hair get into better conditioner, bit after the first use it's definitely feeling better!

Wow. It does work even after second use there is a huge difference with the ends of my hair . It’s an absolute GAME CHANGER. A little goes a long way . I only bought the smallest size but I do feel that will last a while . I only use 2x a week . I definitely will not be going back now !! Worth the money if you want to restore your hair . It’s magic

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.

Muy bien

The quantity you pay for at the salon is very economical; it's suitable for more than 5 hair washes and is safe.

Tenía dudas por algunos comentarios que había leído sobre que no era para tanto, pero realmente puedo decir que funciona desde el primer uso. Mi pelo está decolorado, además llevo peinado bob, por lo que suelo peinar con calor y está rompiéndose. Aposté por este producto por su fama y puedo decir que desde el primer lavado se siente el pelo con más peso y menos fragilidad. Evidentemente si buscáis que solucione la rotura, seamos realistas, ningún producto lo hará. Si quieres mejorar la calidad de tu pelo y recuperar parte del daño, pruébalo. Es caro sí, pero los buenos productos lo son. No se necesita aplicar demasiado producto como cualquier producto de calidad.

I didn't use it that much but my hair is good

fortalece bastante. com certeza vou comprar de novo.