Vitamin C gets an A+! Serums with vitamin C stimulate collagen production which slows as we age. In addition to its anti-aging benefits, topical vitamin C is also great for protecting your skin from damage—especially from the sun's UVA and UVB rays. That's because vitamin C is an antioxidant, so it naturally helps to strengthen your skin and repel things that could damage it. Vitamin C serums fight the appearance of hyperpigmentation by inhibiting the tyrosinase enzyme and preventing melanin production," according to Rhonda Q. Klein, M.D., a board-certified dermatologist.
The process brightens dark spots without lightening skin tone overall.
Vitamin C has even been found to help even out skin tone and reduce the appearance of under-eye circles. It has also been found that vitamin C, in high enough concentrations, has inflammation-reducing qualities. So if you wake up in the morning with puffiness around the eyes or other areas of the skin/face, vitamin C will be your go-to.
Your skin needs a very high concentration of this vitamin in order to see results. Serums are different from cremes and other products with vitamin C because of the significantly higher concentrations, which allow you to get the most out of the product and see more noticeable results.
L-ascorbic acid is one popular form of vitamin C, and although it's more unstable than other forms of vitamin C, it's also less irritating. Look for vitamin C serums that contain ferulic acid, which helps stabilize the vitamin and creates an ideal pH level.