collagen serum

When your skin is dry and your eyes hollow, a quality collagen serum or

cream can help your face become firmer and more hydrated. But experts are quick to point out that collagen serum doesn't necessarily increase collagen—and it's definitely not a quick fix for fine lines and wrinkles.

To maximize anti-aging benefits, look for collagen serums that include other important ingredients known to play a role in collagen production, namely vitamin C (also known as L-ascorbic acid) and retinol, which actually work to improve the strength and thickness of the skin, says Dr. Carolyn Jacob, a board-certified dermatologist in Chicago. ​

 For best results, apply collagen serum containing vitamin C in the morning, since this ingredient works to quench free radicals and increase photoprotection when used with SPF, and if you have one with retinol in it, apply that at night. Retinol is designed to slow collagen breakdown, exfoliate dead skin cells, and improve skin tone, but it can be irritating and increase sun sensitivity. ​

Either way, to apply, simply wash your face with a quality cleanser, dab a few drops of serum (they’re very concentrated!), and wait about 30 to 60 seconds for it to penetrate before adding your favorite moisturizer, says Dr. Debra Jaliman, a board-certified dermatologist in New York City.

Ready to get your hands on one of the most hydrating agents out there? Dermatologists say these are the best collagen serums for the job.