"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Your morning skincare routine probably includes a vitamin C serum. It's a foolproof addition to any ...

Since vitamin C is a water-soluble vitamin, any excess is excreted in the urine in a few hours. Current U.S. recommendations call for 75 mg of vitamin C per day for adult women and 90 mg per day for ...

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“Vitamin E is a fat-soluble vitamin, and because of this, it works primarily within the cell membranes of the skin by helping ...

Do you need to take vitamin C supplements, and how much is enough? The answer may depend on your age and overall health. Vitamin C is a water-soluble vitamin with a variety of benefits, but our bodies ...

Vitamin C is an immune-boosting superhero. It’s also a nutrient that the body doesn’t make (unlike vitamin D), so you need to get it from your diet or a supplement. Besides bolstering the immune ...

Rachael Link is a registered dietitian and health writer based in San Francisco. She completed her undergraduate degree at the University of Central Missouri and holds a master’s degree from New York ...