Remove Flawless cap, slide the switch located on the side of the unit upward into the "ON" position. The light will automatically turn on when the unit is "ON". Gently press the head of the unit flat against your skin. The unit should not be on an angle. Precede making small circular motions to remove unwanted hair. Note: It is normal for the head to become warm with use. The secret is a revolutionary Butterfly Technology that erases hair by microscopically paring it down through a spinning head. Neatly and discreetly housed under the 18 karat gold-plated head, the Butterfly Technology never touches delicate facial skin. For superior results, use on hair 1/4 inches in length or less.