A random survey of salon owners revealed it to be a laughable notion.
Rising rents also drive up prices, salon owners said.
The salon owners closed the shop voluntarily in early October.
But they are increasingly coming forward to ask for remedies, doctors and salon owners say.
Some salon owners have sought to make services more masculine by changing their names.
Last month, the Korean salon owners held their 13th annual association dinner.
One young Korean salon owner said, "We all work hard.
Concerns about such abuses have led to stepped-up efforts to confront salon owners.
And salon owners should be aware of this phenomenon.
In a recent sampling of salon owners, there seemed to be little resistance to the age restrictions.