Very good hyaluronic serum. It absorbs immediately, does not weigh down, fully hydrates, and makes the skin radiant. I use it many times during the week, especially in the mornings after using retinol, which can make the skin feel tight. I have compared it to another hyaluronic serum, which is considerably cheaper, and this one is more hydrating and effective. When I apply it, my skin remains hydrated after using retinol, whereas if I use another hyaluronic serum that I currently have, my skin starts to feel tight by midday. The price is high for a hyaluronic product, but I found it on sale from an international website. If I find it again at a similar price, I will purchase it, otherwise, I will look for another one