10 Skin pigmentation, devices and instruments for medical treatment of human skin, their components and accessories therefor, namely needle cartridges and handle pieces to hold needle modules, cryotherapy, devices and instruments for medical treatment of human skin; mesotherapy devices and instruments for medical treatment of human skin, device, devices and instruments for applying substances into and under the skin for medical purposes; devices and instruments to stimulate human skin for medical purposes, their components and accessories therefor, namely needle cartridges and handle pieces to hold needle modules;. lasers for medical purposes