Needleless Derma Rollers overall compact size, 2 ½” x 1 ¼” x ½”, is a perfect portable pocket size for your purse or cosmetics bag. This small handheld stainless steel zinc alloy massager will help to relieve skin fatigue, tired or stressed skin, and facial muscles, which in turn helps to treat headaches, fine lines and wrinkles. This roller stimulates blood circulation with a therapeutically-designed rolling pyramid-shaped surface. Roll across your face in a smooth and consistent motion, pressing with light to medium pressure, while always taking care that the pressure is at a comfortable level. Use 2 to 3 times a day for optimum relaxation. Be gentle and take care around the eye area. NEVER roll across eyelids, nor on or in eyes. Acupressure stimulation works through the principles of acupuncture, but this treatment does not require the use of needles, therefore does not require sterilization. To clean, gently wash with mild soap and water. Dry thoroughly to prevent damage.