I use to be on Dermalogica for so long. Love the Product range. Ive got really sensitive skin, been on the Ultra-sensitvie range, got nice results etc. My Skin was very dry, so the terapist told me to use the Skin Hydrating serum... but I think my skin was so sensitive, cause it did not react to my skin as we hoped for. Got really bad breakouts. So when i stop using it, my skin begin to normalize again. But I still believe in this range, it was just not for my skin...