AURORA, Colo. — It was a day out at the spa for Paige Ehresman and her closest friends. Manicures. Hairdos. Makeup. And some gossip — about second grade.

The spa industry has begun to target children in a big way, going way beyond mother-daughter manicures. Adult spas are adding separate menus of services for girls, usually ages 4 to 14. In most major cities, there are now dedicated day spas for children, offering a range of massages, facials and other treatments for girls (and sometimes boys) too young to have had their first pimple.

“I feel like the best princess in the world,” said Paige, who celebrated her seventh birthday at Sweet and Sassy, a national chain of spas that boasts that its cosmetologists are specially trained to work with children. After the beauty treatments, Paige and her guests walked down a red carpet and disappeared into a hot pink limousine, which took the squealing children on a spin around the parking lot. One 6-year-old guest documented the revelry in a series of selfies.

These sanctuaries of luxury proudly pamper their charges, wrapping them in custom-size robes, suggesting oil rubs for heels worn rough by barefoot play, and lifting clients onto massage tables when they are too small to do it themselves. On the high end, the “kids’ treatments” menu at the Beverly Wilshire spa in Beverly Hills, Calif., charges $50 for a 15-minute “princess facial,” which includes “a facial cleanse and massage.” For the mass market, there is the $30 Orbeez Luxury Spa at Toys “R” Us, a toy that looks like a pedicure station in which girls can immerse their feet in tiny gel-filled balls.