The former X Factor judge kept her hood up as she made her way into the west London salon and, despite it already being dark outside, wore a pair of sunglasses.
Tulisa was also sporting a baseball cap, which she matched with her military-style jacket and blue jeans, and she kept her long blonde hair loose underneath.
Last week it was revealed that Tulisa is to be charged with a drugs offence following an alleged incident in June.
It is thought she will appear in court in connection with this in the coming days. Tulisa's rep has indicated that she will plead not guilty to the charge of being concerned in the supply of Class A drugs.
Meanwhile, it was reported earlier today that Tulisa's N-Dubz bandmate and ex-boyfriend Fazer has been declared bankrupt.
The rapper, real name Richard Rawson, is said to have been unable to pay his tax bills.