What is serum?
If you think of your nightly skin care routine as a three course meal, serum is kind of like the main course. Much like a main course, serums can contain a range of useful nutrients for your skin. Serums are skin care products that are designed to deliver high concentrations of specific active ingredients to the skin.
There are many different types of serums on the market that perform different jobs, ranging from hydration to skin brightening. Most often, serums are clear, gel-based or liquid, and they tend to be less thick than a moisturizer. In general, serums contain topical antioxidants including vitamin C and E. They also contain topical retinols and ingredients that even out skin tone.