It's a bad "x for y" because I've never heard of classpass and I don't know what a hair blowout is. The "hair blowout" part might be commonly known among investors, and definitely among the target market, but I don't think classpass is a household name. ("blowout" would be bad; "hair blowout" is probably ok.)

It's not necessarily a bad startup (from a few minutes googling, it's probably a good market, and a solid team; haven't looked at the product).