I also associate the term "bloc" with "Soviet bloc countries", which is a real negative thing historically in the US. So I wouldn't be very comfortable with joining a "bloc", even without subliminally wondering if joining this "bloc" would ensure I became uglier. (Edit: I will add that in that context, the idea of a "beauty bloc" brings to mind very unflattering cold war images of Soviet Bloc women. Not anything I would aspire to look like.)
However, my mind isn't normal. So take that opinion as a sampling of one, and no reason to think it is representative of your target market (since I don't wear any make-up ever as I am allergic to everything).
Good luck with this.