If you’re using a serum (perhaps one of our best sellers, the Vitamin C Serum or Cellufirm Drops) you’re certainly doing your skin a favor. Serums are truly state-of-the-art skin care products because they are potent formulations that deliver beneficial high-performance ingredients such as antioxidants, humectants or other cell-communicating components to the skin.As advantageous as serums may be, don’t be tempted to put good and faithful moisturizers on the back burner—especially if the consistency of the serum you’re using is lotion-esque. Moisturizing is a crucial part of skin care. Keep in mind that your skin has a very important job to do- it protects the entire body. Moisturizers work to protect our skin from the elements while adding moisture. Also, while some serums contain hydrating ingredients such as hyaluronic acid, you need to layer a moisturizer over the serum to seal it into the skin. Which serum are you using?