I'm writing this review based on my personal experience and on my daughter's skin reaction to it.
I started using Hydrabio Riche a good six month ago during winter time. I don't use it everyday but everytime my skin feels in need of a hydrating boost. My skin is pretty dry and this stuff works well at night for me. I wake up with soft and plumped skin. I also like it soon after a diy facial. It's rich and can be worked into the skin with a good massage. So thumbs up for me.
I gave some to use to my daughter one morning before she set off to school. She has, fair sensitive skin and when she got back home her skin had developed a bad rash, her face was all red and bumpy, really bad I mean and it took a few days to disappear. To make sure it was caused by Bioderma, we re-applied it some days later on the back of her wrist. Immediate reaction. red and Itchy.
So all in all, it works for me so far but I don't feel inclined to repurchase it when the supply is over.