A cosmetic treatment for reducing body size, incorporating a cosmetic minimally-invasive procedure (CMIP) and incorporating cold atmospheric plasma irradiation (CAP) of a body, the treatment comprising the five steps of: a first step of preparing a cosmetic composition and applying the composition to the body to form a mask on the body; a second step of using a gypsum plaster of Paris (POP) and sealing the mask; a third step of wrapping the POP with a nylon/plastic wrap; a fourth step of preparing the body with a layer of aqueous surface gel; and a fifth step of using CAP irradiation of the body; whereby the body is an abdominal region, and the body size is indicated by at least three representative body circumference measurements; and whereby body size reduction is statistically significant when comparing before and after cosmetic treatment body sizes.