The spa industry in the United States is  targeting children in a big way. Adult spas are adding separate menus of services for girls, usually aged  4 to 14. The International Spa Association, which tracks industry trends, says  that 25 percent of the country’s approximately 20,000 spas now offer services specifically for the under-13 ‘s  – up from 15 percent just four years ago.

This is clearly a growing trend across the Atlantic and one that can be expected to grow here too. How could you cash in?

Thinking more broadly, what other traditionally adult services might lend themselves to a teen or child-friendly version?