Sisley is a high-end, very expensive brand. This serum costs £289. The SA raved about it, said it was flying off the shelves. Well, I bought it and I was sold a pup. I used it religiously, morning and night until finished. It had no visible effect whatsoever. It did not firm, reduce wrinkles, or improve skintone or radiance. I had bought it mainly for it's reputed firming benefits, which are non-existent. Don't waste your money on this. I have no idea how Sisley can make such claims for this product and get away with it. I would give this a zero rating if I could.