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You want to maintain your youthful glow, and you’re willing to spend time and money to help delay premature signs of aging on your skin.

And yet with so many products on the market, it can be difficult to suss out which ones will slow the effects of time on your face and which ones are smoke and mirrors, says Joshua Zeichner, MD, director of cosmetic and clinical research in the dermatology department at Mount Sinai Hospital in New York City. Some ingredients, such as retinol and sunscreen, do have proven benefits, he explains. Those aren’t the only ones to consider when building your healthy skin-care routine, though.