Something related to this kind of business is in my mind when I have the money, but am afraid of police because BTC and crypto has been banned from my country, and if you are caught doing such business, your business will be close down and you will be file some huge amount of money not to go to 10 years in prison.
The day your government will discover that people are making money from such business in that community, based on they are accepting BTC, it will make the agency to increase your taxes to limit your weekly or monthly profits from the business.
I know is not easy for you to establish such beauty shop to accept BTC, and it will make some bitcoiners in that community to turn up to always follow you to buy what ever they want and pay with BTC and it will increase your profits.
It will of course be of a greater challenge to people living in regions where BTC and cryptocurrencies in general is banned or not fully accepted, to infuse BTC payment for customers.
For our OP, she would have to single-handedly teach her workers and customers the know-how of BTC and cryptocurrencies and as much as it would be a daunting task, am sure it would bear fruit as it has already done much publicity for BTC and cryptocurrencies and in the nearest future, where it is acceptable, the work will have already been set up and done.
More businesses will have to accept BTC and Cryptocurrencies as payments soonest, once they can be allowed to pay their taxes with it.