Of course, moisturizers and serums have different textures. Serums tend to be more lightweight, and feel great on the skin. However, depending on your skin type, you may have to play around with the option that’s best for you.  If you have oily skin, then serums might be the better option. They're more lightweight, but they still provide your skin with the hydration that it needs. On the other hand, you may find that switching up your skin routine is better. For instance, serums might work well for the summer, and moisturizers will keep your skin more hydrated during the winter because they generally consist of thicker formula.