This is the best anti-aging product you can buy at the drugstore

The INSIDER Summary:

• The best drugstore anti-aging product is RoC's Retinol Correxion Deep Wrinkle Serum.
• A dermatologist recommended it, and the reviews are off the charts.
• It only costs $20 to $25.

Washing your face thoroughly, applying moisturizer, wearing sunscreen — these are all no-brainer things that can keep your skin looking younger and healthier for longer.

And while most of the touted anti-aging products can cost upwards of $100 — La Mer, one of the most lauded anti-aging creams in the world, costs $170 for a single ounce — the team at INSIDER wondered if there was a dermatologist-approved anti-aging product people could get at the drugstore.

We asked Dr. Rebecca Kleinerman, a dermatologist practicing in New York City, what her top pick would be, and she recommend RoC Retinol Correxion Deep Wrinkle Serum.

"A serum is a concentrated oil or water product that is used to apply active ingredients to the skin's surface and it's typically used for anti-aging purposes," Kleinerman explained. "Serums often contain botanicals and anti-oxidants and peptides, and ingredients that are meant to help and repair the skin from everyday damage, pollutants, and things like that."

It's the high-quality of RoC's ingredients, including the anti-aging ingredients retinol, that made Kleinerman recommend it. And reviewers seem to agree: It has 4 out of 5 stars on Amazon, 4.5 stars on Target, 4.5 stars at CVS, 4.5 stars on RoC's own website.

It also helps that it's only $20-$25.

According to RoC, you can use it once or twice a day either at night or in the morning (or both). But because it's not a moisturizer, Kleinerman recommends using it with a light lotion or cream afterwards.

"If you want to retain the moisture in your skin, which is also good for anti-aging purposes, you want to put a moisturizer on top," she said. 

Noted.

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