Kerastase Treatment 1000ml, used only once, almost new. I also purchased this at a beauty salon in Roppongi Hills. Since it's from a beauty salon, it's definitely authentic. Please rest assured. I bought it out of curiosity, but I used it once and it didn't suit my hair at all, so I've decided to use something else and am selling this. I purchased it in 2025. I bought it for around 15,000 yen. It seems the price will increase in the future, so I think it's a good deal. #Kerastase