Well everyone has already suggested spray tanning so thats my idea out the window so I'll just wish you good luck with what ever you decide to go with and hope it all works out hun.
As for colours, you couls keep the walls neutral and liven it up with accessories, this way you can change the appearence of the salon without haing to keep redecorating the walls.
As for colours, you couls keep the walls neutral and liven it up with accessories, this way you can change the appearence of the salon without haing to keep redecorating the walls.