Wiktionary
mesotherapy
n. (context alternative medicine English) any treatment that involves the injection of vitamins or other substances into the mesoderm of the skin
Wikipedia
Mesotherapy
Mesotherapy (from Greek mesos, "middle", and therapy from Greek therapeia, "to treat medically") is a non-surgical cosmetic medicine treatment. Mesotherapy employs multiple injections of pharmaceutical and homeopathic medications, plant extracts, vitamins, and other ingredients into subcutaneous fat. Mesotherapy injections allegedly target adipose fat cells, apparently by inducing lipolysis, rupture and cell death among adipocytes.