The raid was conducted last evening by crime branch officials who sent a decoy customer to the place to ascertain the racket.
The nine girls who were rescued are from Sikkim, Mumbai, Karnataka and Manipur.
Six people working at the parlour including Sandip Bhagi (Delhi), Rajesh Kumar (Rajasthan), Mehtab Singh (Haryana), Amit Agarwal (UP), Ashit Kami (JK) and Manjunath (Karnataka) have been arrested, the police said.