This convenient, portable pen directly targets and lightens dark knuckles, dark spots and other small skin discolorations with a quick roll-of-the ball. It is highly recommended to perform a skin sensitivity test before using on your face. Portable, spot lightening penLightens dark knuckles, dark spots, blemishes and other small discolorationsPerform a sensitivity test before using on face.Recommended for all skin types except sensitiveHow to use:Recommended for all skin types except sensitiveThis is a spot correcting targeted solutions product. Usage:Apply morning and night to discolorations, massaging gently into the skin. For the illuminating results, exfoliate area 2-3x weekly and hydrate with skin type appropriate hydrator or moisturizer.