Who was the male star of the film 'Shampoo'?

Shampoo is a 1975 American satirical romantic comedy-drama film written by Robert Towne and Warren Beatty and directed by Hal Ashby. It stars Warren Beatty, Julie Christie and Goldie Hawn, with Lee Grant, Jack Warden, Tony Bill and in an early film appearance, Carrie Fisher.

The film is set on Election Day 1968, the day Richard Nixon was first elected as President of the United States, and was released soon after the Watergate scandal had reached its conclusion. The political atmosphere provides a source of dramatic irony, since the audience, but not the characters, are aware of the direction the Nixon presidency would eventually take. However, the main theme of the film is not presidential politics but sexual politics; it is renowned for its sharp satire of late-1960s sexual and social mores.

The lead character, George Roundy (Beatty), is reportedly based on several actual hairdressers, including Jay Sebring and film producer Jon Peters, who is a former hairdresser. Sebring was brutally murdered by the Charles Manson family in 1969. According to the 2010 book Star: How Warren Beatty Seduced America by Peter Biskind, the screenwriter Towne based the character on Beverly Hills hairdresser Gene Shacove.