. >> announcer: the following is a paid advertisement for cold plasma sub-d by perricone md.appearance and help remove some of the signs of aging on your neck for a look that is firmer, tighter, and more youthful? well, now you can. introducing dr. perricone's cold plasma sub-d. sub-d is specifically formulated for the area called the submandibular. often neglected, the skin in this area has unique needs, and cold plasma sub-d helps tackle the most common signs of aging on the chin, jawline, neck, and décolleté. coming up in the next half-hour, you're going to meet the creator of sub-d and the dermatologist to the stars, dr. nicholas perricone. dr. perricone believes that aging is optional, and you don't