Victoria Police is in a Supreme Court fight over the sacking of a policeman who allegedly exposed himself to a beauty therapist as she waxed his "speedo line".

The senior constable with Melbourne Highway Patrol was accused of "disgraceful conduct" and charged with disciplinary breaches last year, before his dismissal from the force in February 2019.

The officer, given the pseudonym IHF in court documents, attended a day spa and wellness centre on six occasions between in 2016 and 2017, where he requested a "male wax, speedo line."

He repeatedly asked for a 23-year-old woman to perform the depilatory procedure, including on March 27, 2017 when the alleged incident occurred.

"As I was waxing him he asked if I could go a little further and lifted the towel to reveal that his penis was erect. He was staring at me strangely and I felt disgusted. I said 'no' and turned my back on him towards the waxing pot for a few seconds hoping that he would put the towel back," the woman told police investigators.