Vitamin C 18% serum has gained popularity in many skincare routines all over the world, and this is for a very good reason. It is very well known to have strong antioxidant properties and is very beneficial to the skin in many ways, which can contribute to a brighter, more youthful-looking complexion. Here’s an in-depth look at the benefits of using a vitamin C serum and why you should include it in your daily skincare routine.