He didn’t have a happy ending at this Chelsea salon.

A Bronx man claims he lost out on tips from angry customers who expected him to give sexual favors during hair-removal sessions — because his boss encouraged the behavior.

Markeith Parks alleges Oskar Morett, owner of MPM salon on West 27th Street, repeatedly asked about the size of his clients’ genitals; kept porn loaded onto tablets in the treatment rooms, and did nothing to discourage sex between his employees and customers.

When he asked Morett if employees were “supposed to have sex with the client,” Parks contends in a Manhattan Supreme Court lawsuit that the boss replied, “If anything happens let the client initiate.”

“Dissatisfied customers would often leave [Parks] no tip because [he] did not satisfy their expectations which were insinuated by Oskar Morett,” Parks said in court papers, in which he said the work environment was so bad he was forced to quit.

Parks also got 30% commissions — while coworkers who had sexual relationships with clients got a hefty 50%, he said in court papers.

Parks is seeking unspecified damages.