Oz Says: Not by itself. Oils do one thing: Like plastic wrap over a brownie, they trap moisture in. What oils can't do: "Draw hydration to the skin and fill in the spaces between cells, the way moisturizers do," says Heidi Waldorf, MD, of the Icahn School of Medicine at Mount Sinai in New York. Apply oils over serums or lotions to seal in the hydration they provide.
This story originally appeared in the October 2016 issue of Dr. Oz The Good Life.
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