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The best serums for mature skin can effectively target multiple signs of aging in a single swipe.

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Photo: Courtesy of RoC

Serums usually have concentrated active ingredients targeting specific concerns, such as anti-aging and hydration.

This is where serums can really help.

At what age should you start using an anti-aging serum?

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(Well after college to be precise.)

When should you apply anti-aging serums in your skin-care routine?

Dr. Kim recommends applying an anti-aging serum after cleanser and before moisturizer.

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Besides hydrating the skin, they help seal in moisture and facilitate absorption of other topicals you apply.

Hyaluronic acid serums can also be layered with other serums.

For other daytime recommendations, A Vitamin C serum is great for the morning, says Kim.

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Its a great antioxidant and will help remove free radicals during the day.

Hydrating serums with growth factors are also great to use in the evening.

Since skin regenerates during sleep, its thought that growth factors can provide the deepest repair at night.

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