While water is the best thing we can drink to hydrate our bodies, when it comes to skin, water is great for washing—but not so great for providing much needed moisture. Though water often plays center stage in skincare and makeup products, many of the claims surrounding water’s ability to hydrate skin can be misleading. Sure, water may be a main ingredient—but it’s often used as a “filler” ingredient because it’s still viewed as a “cheap” commodity and can serve as a “base” for other ingredients.