I'm a natural blonde with very thick hair. I've gotten used to having to use a lot of conditioner, but I was hoping that wouldn't be the case with this conditioner, especially because I'm always impressed by Klorane products. It's a very gentle conditioner and smells lovely. It didn't do anything wrong to my hair- during the day, it felt silky, smelled wonderful, and styled well. However, I felt like I had to use an inordinate amount of product to condition my hair and was still left with big tangles, regardless of whether I combed it through my hair and waited, as the bottle suggests, or just kneaded it through my hair.
I probably wouldn't purchase it again, but it might work well for someone with thinner or less tangly hair.