I have been using this product for years and it does a very good job, but it doesn't require a lot of quantity and not at the roots like keratin because it makes them oily. The hairstyle lasts until the next wash, just like keratin with the steam pod. The hair grows and doesn't break

The product does its job perfectly and delivers what it promises.... You apply the product on damp hair from roots to ends... in terms of performance, it is excellent as a professional. I am very satisfied, it does not frizz at all and lasts for 2-3 days. It should be noted that I live in a coastal area and the humidity is very high, both in winter and summer. I highly recommend it

I have thick and frizzy hair, and this is the only product that withstands freezing and keeps it straight.

It does not make the hair oily and makes it very smooth. I use it after showering on damp hair as it says and it takes me half the time to straighten my hair with the straightener. I highly recommend it!

Carbon is gold..I bought it because I saw it advertised everywhere, but it definitely doesn't do what it promises. It dried out my hair, I didn't see any difference in straightening, if anything, I think I did a better job myself before. I also bought the whole straightening package, such a waste of money I spent. I wouldn't buy it again.

I bought it but it doesn't do anything it promises. Also, it is so liquid that it runs off your hands before you have a chance to apply it. It's not worth its money.

In no case does it do what it promises. I tried with a brush and a hairdryer and my hair didn't straighten. They became worse than when I use just a brush because, in addition, it made them dry. I tried with a straightener and the result was equally disappointing. And of course, they frizz the next day. It's a shame the money I wasted.

It does not straighten the hair without a hairdryer.. with a hairdryer it straightens well. But without it, it caused a slight breakage in my hair

Amazing, it does exactly what it promises. You use the amount it tells you to avoid greasiness, as I saw in another comment. It clarifies that you put a little on wet hair. It softens them, makes straightening much easier, and they don't frizz. I will definitely buy it again.

I have curly hair and now straightening is much easier and the end result is much more shiny, without frizz. I would highly recommend it.