If you are using this hydrating face mask overnight, you do not need to apply a moisturizer. Formulated with a high concentration of 10.5% Squalane and Glacial Glycoprotein, this overnight face mask melts into your skin to prevent excess overnight moisture loss and boost skin barrier stability overnight. Wake up to soothed, flake-free, healthy-looking skin that feels stronger and more resilient against external aggressors.