There's a reason why Google searches for vitamin C serums have risen sharply over the past few years. Brightens dark spots and acne scars? Check. Fights free radical damage? Yup. UV ray protection? Absolutely.

This star ingredient also plays nicely with many common skin care additives (except acids and retinol), and is even supercharged when combined with other antioxidants like vitamin E and ferulic acid. 

Packaging is crucial to note when it comes to products containing vitamin C—its potency deteriorates when exposed to light or air, which is why most brands use darkly tinted or opaque bottles and pumps are preferable to droppers. Another important factor is which form of vitamin C a manufacturer is using; L-ascorbic acid is widely considered to be the most stable and effective form among dermatologists, though there are appropriate reasons like skin sensitivity to choose other variations.

Of course, synthetic derivatives aren't the only way to champion vitamin C, and many natural brands do combine them with natural forms of the powerhouse ingredient that have the added benefit of naturally occuring phytonutrients.

Click through this gallery to learn about nine impressive vitamin C-infused personal care products, some new and some old favorites, perfect for freshening up your natural beauty section.

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