The Perricone Sub D Cold Plasma helps to obtain a smooth, sculpted skin along the chin line and along the entire jawline. This treatment is part of the revolutionary Cold Plasma line that has been proven to help reduce the appearance of folds and sagging skin in the jaw line. With Cold Plasma Sub D you can reduce the loss of elasticity and soften wrinkles in the neck giving a youthful appearance. The result is a noticeably firmer neck;