The incident occurred around 7:00 p.m. at the Crystal Palace Unisex Salon in the 1400 block of West Girard Avenue.
Several customers scrambled for safety after a shot was fired inside the shop, police say.
Officers responded and launched an investigation. Police tell Action News no witnesses came forward.
One person was taken from the salon in handcuffs. There was no immediate word on whether charges would be filed.
No injuries were reported.