this review title is: vitamin c serum with a slightly thick texture takes a little time to be absorbed and the content is: i am always interested in trying new skincare innovations products and brands i am new to this american brand md complete but found the vitamin c serum nicely packaged and high qualityi use different serums in the morning and at night this vitamin c is a little thicker than what i usually use and is feels a bit oily but going on it is absorbed quickly and does not leave the skin feeling greasy i would use it at night though it felt deeply hydrating and the vitamin c helps brighten and even out skin tonei have sensitive skin but did not experience any irritation sensitivity or redness using this product.there are other information for this review, one is this reviewer did not purchase it and the other is 0 people think this review is helpful.