I have tired a lot of serums, but this one is my favorite so far. the formula is soft and silky. It glides onto your skin, instantly smoothing fine lines and leaving your skin soft and touchable. The vitamin C formula revitalizes skin, and it never leaves behind any greasy residue. I have only been using it for a few days ,but already my eyes have diminished and my whole face has a beautiful healthy glow. I have never tried a serum with real gold in it , and I had no idea what to expect. I wondered if the tiny gold specks would feel rough  against my skin, but that wasn't the case. Instead , it leaves my skin with a golden tone that looks younger and healthier and to top it off I love the beautiful bottle with the specks of that adds a touch of bling to my vanity. I received this product for free for an exchange for my honest review.http://www.isa-professional.com/products/xanadu