my scalp is extremely sensitve and i am starting to lose hair. the girl at the shop said vichy products has thermal water and it's good for senaitive skin so i tried. to my surprise, it's really good. and the price is cheaper than the "professonal" ones i bought in salon. I like the fresh feeling and no more itchy scalp. my hair feels thicker/stronger. of course I still lose some hair but it looks like it has more volume.mybe it's psychological but i like it. it will be better if the size is bigger