The episode title is a reference to the film Shampoo, which is also about a hair salon.
David Rasche and Clive Revill have both done voice work for the Star Wars franchise. Rasche provided the voice for Admiral Piett in the radio drama version of The Empire Strikes Back. Revill was the voice of Emperor Palpatine in The Empire Strikes Back until the 2004 DVD release, when the emperor's scenes were redone with Ian McDiarmid.