Do Beauty Supplements Actually Work?

This would turn into a very long science lesson if we were to get into the finer points. "Because supplement ingredients are so varied it is complex to describe how each individual ingredient works," says skin expert Dr. Robb Akridge, co-founder of Clarisonic. "In general, supplements make up for any dietary deficiencies consumers may have from a poor diet."

Modern diets can often be low in nutrients like B12, zinc and omega-3, Blaisure says. A deficiency in certain nutrients negatively impacts cells' ability to produce new cells. This will show up in a physical level in hair, nails and skin. Beauty supplements help fill the void. Additionally, they boost skin's defense mechanisms, including those for stress, and increase skin's brimming-with-health glow. With time, the results should be noticeable in the form of longer, stronger nails and hair, and more radiant skin.

Try: Dr. Barbara Sturm Skin Food Supplement, $95

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