Healthier Skin Guaranteed

The Benefits of Vitamin C
For Your Skin

From boosting radiance to helping diminish the signs of aging to antioxidant protection, Vitamin C is a highly efficacious skincare ingredient with a wide range of benefits. It’s a popular ingredient with proven results and lots of science and research to back up its benefits for your skin.

One of the best ways to incorporate this tried-and-true ingredient is in a Vitamin C serum. These concentrated complexion boosts provide a targeted treatment to help your skin look brighter, smoother, and healthier.

There’s a lot to learn about Vitamin C, so keep reading to get the facts around this skincare star.

When Do You Apply Your Vitamin C Serums?

After you cleanse and tone your skin, apply a thin layer of your serum. Smooth it on morning and night before your moisturizer to help lock in the skin benefits of your Vitamin C serum. While Vitamin C help defends skin during the day, it is also an effective ingredient to use in your nighttime skincare routine. For best results, use your Vitamin C serum twice a day, morning and night.

How Often Should You Apply A Vitamin C Serum?

At Kiehl's, our Vitamin C serums are carefully formulated to be gentle enough for sensitive skin and are tested on panels of 50% sensitive skin individuals. But, as with any active ingredients, when first beginning to use a Vitamin C serum, start with a once-daily application, and gradually build to twice a day. Always consult with your dermatologist when incorporating new skincare products into your routine.

Where Do You Store Your Vitamin C Serum?

Because L-Ascorbic Acid serums can degrade in heat and humidity, putting yours in the medicine cabinet could cause it to lose its effectiveness. While many L-Ascorbic Acid serums come in dark-colored or amber bottles that can help protect the formula from light, you should still be sure to keep your products away from direct sunlight.