Not effective at all for dry skin. I bought it thinking that a company like Kerastase would deliver on its promises, but I was disappointed...

I have been using it for a month, it hasn't done any work at all!!!
I went back to the previous one I had and the problem improved somewhat.

Disappointment! 26€ wasted.

Very good professional product, it does a great job on the hair and you won't find it on the shelves of supermarkets but also in beauty stores, you will only find it in hair salons and stores with hair salons already.

I had bought this shampoo as a trial. Because quite often, after hair dyeing (blonde hair towards ash blonde...), some people may have experienced an intense redness on the scalp, as well as "opening up" in some areas, leaving small wounds that eventually heal and require a touch-up dye. As a fan of Kerastase, I thought I wouldn't try this one. But if it does even a few of the things it promises, I will calm down a bit. Well, apart from being a pretty good shampoo, it leaves the hair soft, has a subtle scent, and is reasonably priced. Moreover, it truly soothes the scalp. I have much less irritation after dyeing, minimal redness, and the wounds are somewhat smaller and less exposed. I am writing this in detail because I was really skeptical, but in the end, I use it immediately after dyeing and for about a week after. Always for the first two washes, and then, if needed, I may use another shampoo for the third wash, depending on the situation