... period for each SPA session.2. The SPA Gel Socks itself already has the skincare function; applying ... SPA effect. 5. The skincare essence in the gel socks will be gradually used up, so please ... General knowledge about the SPA Gel Socks1. What is the biochemical gel?A: This gel is a transparent gelatinous ... : cotton 80%, elastic fiber19.5%, rubber 0.5%;Gel: vitamin E, jojoba oil, grape seed oil, olive ...