There is a glitch with Sunset Valley's salon which resets your Sim's age. Some people believe this only happens if you have a tattooing done, but it is if you visit the salon in Sunset Valley and it puts your age to the beginning of the current life stage.
Drea's Salon and Tattoo
Drea's Salon and Tattoo is the default salon in Twinbrook. It features a ground floor salon with three Fuss no Muss Styling Stations, and an underground tattoo parlor.
Shear Perfection Salon & Tattoo Parlor
Shear Perfection Salon & Tattoo Parlor is the default salon in Appaloosa Plains if The Sims 3: Ambitions is installed.
Barney's Salon and Tattoo
Barney's Salon and Tattoo is a salon that appears in the community lot bin once Ambitions is installed. It features a ground floor salon with two Fuss no Muss Styling Stations. It has a medium-sized courtyard out front. Usually, in Sunset Valley, the game automatically places the salon at 415 Skyborugh Road. If The Sims 3: Showtime is installed, the lot will be placed in Starlight Shores.