Vitamin C is an essential vitamin that the body needs for a number of reasons. However, it proves most beneficial to the skin—particularly around the face. For this reason, many people these days use skin-care products that contain vitamin C, such as concentrated vitamin C serums that are designed for use on sensitive facial skin.

Essentially, vitamin C serum is a oil- and water-based liquid that contained highly concentrated amounts of vitamin C. Serums are different from cremes and other products with vitamin C because of the significantly higher concentrations, which allow people to get the most out of the product and see more noticeable results.

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