Vitamin C-based skin care products may lighten patches that are darker than the rest of your skin, called hyperpigmentation. In one study, vitamin C applied to ...

As with any skin care product, some people may experience side effects when using vitamin C serum. ... Some of the most common side effects include: ...

Might Lighten Dark Spots Vitamin C-based skin care products may lighten patches that are darker than the rest of your skin, called hyperpigmentation. In one ...