This product is only sold at Ulta as Retinol brand AntiWrinkle Facial Serum. I got this product because retinoids are the only FDA proven ingredient to prevent wrinkles. I have used other retinol and retinoids (Rx) products in the past that irritated my skin so I thought of trying this drug store version from ulta. This is a great knock off of Peter Thomas Roth Retinol Fusion PM. I use proactiv system daily and it is a god send for acne (benzoyl, aha, and glycolic) but it doesnt help with my texture, pore size, and I also should be using an antiaging product now since Im getting older. I got this serum to use help with that. So i use my proactiv system, this serum, and any oil free night moisturizer. On my first night using this serum, I woke up with virtually no pores!!!! no joke! I was so impressed by the smoothness of my skin. Peels and facials cause my face to be smooth, but I achieved it overnight by this product. I used the next night, and it does not irritate my skin. For a retinol product, this is great news, because retinol is harsh. But this product is divine. It holds 500,000 IU units of vitamin A (retinol). The serum soaks into my skin without being oily or greasy. I also find that it virtually has no fragrance. It comes in a dropper bottle, and I use one dropper squeeze per night. I will continue to use this and update my review. I know several people say once you start using a retinol, you can get breakouts (a purging period), I will let you know If I break out. I am using proactiv, so it could prevent that. I hope to achieve small pore size, smooth texture, and prevent wrinkles for occuring, If I continue to get these results from this product, this will be my HG antiaging treatment. EDIT: ok peeps, I found out from another MUAer that this serum is also available at Sallys for half the price. Oh by the way, this contains .5% retinol which is a good percentage for a small price. Roc skincare line has .2 for the same price.