Smooth Sleepers clear strips that flatten wrinkles while you sleep. They flatten existing wrinkles and prevent new ones as the prevent the skin from wrinkling into the pillow while you sleep. They are terrific for preventing bags under the eyes by preventing fluids from accumulating and creating puffy eyes. They work beautifully to flatten the "11" frown lines between the eye brows. You will see results in one night and after 3 nights, you will never want to be without them! They may be used by men and women.