Removing the surplus hairspray shows the salon needs 33 total cans of hairspray – 5 surplus cans of hairspray = <<33-5=28>>28 cans of hairspray for each customer.
Each customer needs 1 can of hairspray for styling + 1 can of hairspray to take home = <<1+1=2>>2 cans of hairspray.
So the salon has a total of 28 cans of hairspray / 2 cans of hairspray per customer = <<28/2=14>>14 customers.
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