This unique heat pack is designed to relax the muscles in your face while easing away tension and stress, which cause wrinkles. the Face Mask is also great for allergies and sinus troubles, and helps to relieve headaches and migraines. The Face Mask lasts about 30 minutes. You can also use the heat pack as a cold pack. Just place it in the freezer for up to one hour and it will stay soft and flexible.