Full Body Waxing
In general we should keep in mind that we are required to not engage in any immoral activity. I have no idea how this procedure is performed, but from my cursory online research it looks like that the private parts are not required to be exposed. In that case this procedure cannot be considered as haram. Even if the private parts are exposed for an important purpose, for example a medical examination, then there is no harm in that. Whether the waxing procedure is important enough for someone is their own decision.