You don't need a supplement if you get vitamin C from your foods. Also, topical vitamin C does have studies backing its efficacy. Here's one of many studies. I personally like the Timeless vit C+E+ferulic acid serum; I've had a lot of success over the years reducing post-inflammatory erythema from acne. Five Health Benefits Of Vitamin C. 1. Improves Cardiovascular Health And Blood Flow. In recent years, there have been tremendous breakthroughs in cardiovascular health. For years, scientists and doctors worldwide have warned us against the dangerous buildup of plaque. It can lead to a heart attack or a stroke. What To Look For In A Vitamin C Serum. When choosing a Vitamin C serum, there are a few things to keep in mind. Pick a serum with: L-ascorbic acid (the most potent and effective variety of Vitamin C in skin care). A concentration of 10-20%. Below 10% may not be sufficiently potent and above 20% can be too powerful for most skin types. Vitamin C Complex Serum Niacinamide Serum 12% Plus Zinc 2% Marine Hyaluronic Water Cream Quadruple Hyaluronic Acid Serum 5% Vitamin C Mixed Greens Nutrient-Rich Cleanser Face Oil ; Key Ingredients : Vitamin C Complex, Hyaluronic Acid, Vitamin E : Niacinamide, Zinc PCA, Hyaluronic Acid, Vitamin E Vitamin C serum and vitamin E complement each other and, when used together, can give you youthful and radiant-looking skin. You can also use vitamin C serums with ferulic acid and hyaluronic acid. It is important to note that vitamin C is more unstable than vitamin E. Vitamin C degrades easily when it comes in contact with water or air. Additionally, vitamin C serums help hydrate the skin by increasing the amount of water that binds to its surface, which increases suppleness and reduces roughness. 7. Balanced Oil Production. Even if you don’t have oily skin, you can still benefit from using a vitamin C serum to help balance oil production. Furthermore, although the measurement of vitamin D concentrations in a mixture of irradiation products is analytically simple, vitamin D 3 levels in human serum are rarely used to estimate cutaneous synthesis of the vitamin, in part because of the transient nature of this blood parameter and the difficulty of measuring the low levels in serum Vitamin C is an important micronutrient that is well-known for its potential health benefits. In fact, since the 1970s, loading up on vitamin C-rich fruits, such as oranges, has even been touted e7j97Cl.

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