I have also used a beauty mask, and there is indeed a difference between TM and R. The counter staff replied that "R is the new version, TM is the old version". In addition, as far as I know about intellectual property rights, R is the logo of the registered trademark that the merchant has applied for and approved. TM may be in the application, or it may not be applied at all, just telling everyone that the merchant regards this icon or text as a trademark.