The Bachelor fans have roasted host Osher Günsberg after he debuted new peroxide blonds locks.

The 48-year-old showed off his new hair colour on Monday in a promotional picture for the show's upcoming 2023 season. 

'Why does he look like a ken doll?' one stunned fan commented.

'Love Osher, but I thought this was Bob Downe doing a satire,' another person wrote.

'Osher mate, the stylists have done you dirty with that hair!' a third person agreed as another joked: 'We gotta do something about that hair.'

'Osher, is that you?' another person questioned.

This season of The Bachelor Australia will be the first to feature more than one leading man, and has been rebranded 'The Bachelors'.

New Bachelors Felix Von Hofe, Jed McIntosh and Thomas Malucelli filmed the series on the Gold Coast after production moved from Sydney.

Jed is the drummer for Melbourne alt-pop band Mood Monroe. He started drumming when he was just four years old and began playing professionally at 13.

He has worked with a string of famous musicians, including Kylie Minogue, Pharrell Williams, T-Pain and Sean Paul.

Thomas is a former restaurant manager from Sydney, who has spent the last five years working as a fitness and life coach.

The third suitor, Felix, who stands at an impressive 198cm tall, plays basketball for the Melbourne Tigers.

The Bachelor Australia will premiere on Monday, January 9, 2023 at 7:30pm on 10 and 10Play on demand.