The Purest Solutions Vita-A Rejuvenating Retinol Serum comes in a 30 ml bottle, has a liquid-gelly consistency, absorbs quickly and is non-greasy, it is supposed to moisturize and reduce wrinkles, I am satisfied with the first point, it leaves the skin fresh, apart from the anti-aging effect I cannot say how effective it actually is. I really liked the product, the packaging is well thought out, the instructions are on the packaging itself. Testers and The Purest Solutions catalog are also included in the package, a nice surprise! The vial allows for good dosing of the product, and there is also an additional cap that keeps everything hygienic.