You might be able to make a community lot where townies spawn at the makeup chair or whatever to do your Sim's makeup (or maybe you could hire them to, like you can with food stands and stuff). But unless it's a feature in the pack to 'own' a salon or something, I don't think you'll be able to run it as a business.
Retail from GTW allows you to sell items, not services. So you could sell the items (any make up items, the chair or makeup station if that's a thing, CAS outfits) but your store employees won't be able to run the items themselves. This would have to be a feature expanded on. Maybe this pack has it, I dunno. That'd be cool.
You can at least dress your store staff in the outfits from the packs, so there's that. :) You can theme a store all around that stuff if you wanted to. Or if you have Dine Out, you could make a themed diner.
