Customer types...
	Easy money...
	Purchases...

There are twelve types of customers, each with different levels of tipping and patience.

Type	How to unlock
Average tips and impatient	Female student.
Average tips and patient	Woman with brown skirt, man with grey pants, prom queen (little pink dress), male student.
Bad tips and impatient	Punk boy and Goth girl.
Bad tips and very patient	Grandma and grandpa.
Good tippers and impatient	Businesswoman, businessman, bride (pink dress with tiara).

You can replay levels. After you have newer equipment you can gain more money.

At the beginning of the game, save money to hire a hair washer and hair dryer. The coffee and a barista is somewhat useful to have when you are having difficulty. Get the as many extras as possible as soon as you can (for example, an extra hair washing chair, extra waxing station). And as soon as you can, buy the candles. They are very helpful with impatient customers.