I have fine, wavy hair. I applied it according to the instructions, but for me the result was frizzy hair with flyaways after drying, and it felt dehydrated. The product definitely didn’t keep my hair straight in humidity of 80% or higher. I used the whole bottle, but I didn’t notice any difference by the time I finished it.

I’m giving it 3 stars because my hair really does frizz less, even though I’ve been out in heavy rain, but what they advertise—that it supposedly makes your hair waterproof—is definitely not true. Also, my hair isn’t as shiny and smooth as advertised. It’s definitely not that glass hair look. It’s just not as unruly as it was. I wouldn’t buy it again. I found out there’s a dupe for under €10. So I’ll try it when I finish this one and compare

Very effective for fine hair. Apply to damp hair and dry with a brush and hairdryer.

I got it to try it out but the product didn't help me at all, I don't know if I used it wrong but you shouldn't need a PhD to apply it correctly. And I did use a sufficient amount

It is expensive, I have hair that goes below my waist, very long, and it lasts me about 1 year with washing once a week, it makes a huge difference to the hair for frizz, it's worth it if you really have a problem, it will solve it.

Buy it once and never again. Very expensive for what it does, it's not worth it, there are cheaper ones that do the same and better job

Quite useful. I got it mainly for the autumn and winter days when there is a lot of humidity outside and my natural hair is wavy. It's okay, it's not like what I saw in videos where they throw water on the hair and the drop runs as if you've put a film over the hair, they still frizzed, just not as much as without it! They definitely made a good effort, it's a good product for its job. It's decent, okay.

I have very wavy normal hair, and my friend has very curly thin hair. We tried different proportions and methods of applying.
Honestly, we both did not notice any difference by using this product. The hair consumes humidity and becomes fluffy as usual. There is no difference from other protection products.
Maybe it is slightly easier to style with an iron rather than without a product at all. Smell is also not the best. In general, I will finish it, not completely a disaster, but it is definitely not worth the money and hype around.

I only use it every time I straighten my hair, my hair is quite thin, it does the job it promises, the scent is perfect. I also only use it on damp hair.

Compared to the classic, no comparison!!!! This one really does its job! It smooths the hair, protects it from humidity, and gives it incredible shine. The classic did almost nothing for me, while this one does what it promises!

Very good product!! Of course, it requires a good amount, don’t hold back, dry it with a hairdryer, and as someone with curly hair, I guarantee zero frizz. I used to straighten my hair, and with the slightest humidity, it would return to its natural state, but not after I started using this product. If you want to be sure, first get the smaller ml.

This product is supposed to promise longevity in straightening even when exposed to humid conditions.
Hair!
I didn't see any difference from other products costing €3-€4!
Only 2 stars just because I hope it at least protects from heat

I have very curly hair and I straighten it all the time. At the slightest humidity, my hair curls and frizzes. What it does for me is tackle the frizz. On humid days, my hair doesn't stay perfectly straight as it claims, but it doesn't frizz like before. Plus, it keeps the straightness longer. I use it every third wash.

Review from my girlfriend:

I have fine hair and it really is perfect if you use it correctly (check out videos on YouTube for some things to watch out for). I straightened my hair, got caught in the rain on the way, and when it dried naturally it was frizzy. In such conditions or even with simple humidity, my hair puffs up immediately.

The downside is that you have to take the time to do it section by section for the product to activate on the hair.

Straightening my hair by myself either with a hairdryer or with a straightener exactly as recommended I see a difference but I have never seen my hair glass-like as in the videos! But I will buy it again!

I have thin hair and the problem was frizz. It does absolutely nothing. I have put a lot, I have put a little and still nothing. If you put too much, it also creates an annoying sticky feeling in the hair. It's definitely not worth the money

I used it correctly and in many ways since I thought I was doing it wrong. I used less quantity and I used it abundantly.. I also didn't use any other product before and after to see results..
Honestly, it made things worse.. the frizz became even more intense.. also, my hair was soft only for a couple of hours after using it.. I honestly think I wasted my money on this.. maybe the product is not suitable for everyone.. I should mention that I don't have curly or damaged hair.. I just have fine hair.. but because the bottle is full, I will try it again..
For me, the best product for smoothing and heat protection is the mon platin hylloren spray.

Honestly, I have to say. Disgusting!
I can't understand the hype about this product. I had seen so many positive reviews from influencers that I decided to buy it since it seemed to be so good. If not THE worst, it is one of the worst products I have ever put on my hair. NO heat protection, on the contrary, for the months I used it my hair broke and split, even though yes, I used plenty of product as they say you should, and it also dehydrated it a lot! Also, absolutely NO difference in the frizz that is one of my number 1 problems. I will go back to my classic good and more affordable products and this one will go in the trash (2nd bottle because I wanted to give it many chances).

Very expensive for what it offers. I watched videos that transform hair. Absolutely no relation to the amount you put on. I would not recommend trying it, there are much better products on the market

I have very curly hair and this product helped a lot with straightening. I hadn't been able to straighten my hair on my own for so many years and make it stay straight. It really is worth its 100% of the money.

The best treatment for frizzy hair. My hair is super frizzy even with the slightest sign of humidity, after using this product I have been out in the rain and my hair remained silky and not frizzy at all! I didn’t expect it to work so well. You do need to spray each strand of hair and use a lot but you only need to apply every 3-4 washes so it goes a long way and I only use it during winter and autumn when the humidity is high.

I have normal to thick hair, generally I consider that I have a lot of hair and strong except for the ends that are damaged, however the product helps me and I straighten quickly with a simple comb after washing while before I used to sweat to straighten,
the more I use it, I see that after washing they remain straighter so I can easily straighten them,
the issue of volume is ok, it weighs slightly but other products play their role in combination.
It leaves them soft and moisturized.
Expensive indeed but I would buy it again. 4 stars for the price
5 stars for the quality

After months of use, I have to say that it does indeed reduce frizz and when I straighten my hair, it doesn't break again. High price despite its many benefits. Compared to other products, I would say it is the most satisfactory

It does what it promises, at least for severely dehydrated hair. However, because it requires a large quantity, its price is disproportionate

Personally, it didn't do anything for me, maybe they differed a little when I dried them but then they frizzed again. I have also tried the method suggested by wow but still didn't see any difference.

Well... I live in Heraklion, Crete and the humidity here is above 80%, which is good. If I sweat, the hair will relax but it definitely won't frizz. It doesn't promise straightening, of course. It makes the hair incredibly soft and they smell wonderful. I'm thinking of getting the shampoo and conditioner as well. Overall, it's good. Just expensive!