The demonstration is ahead of a larger rally set to take place at the state Capitol on Tuesday. It was organized by a group of stylists and barbers connected over social media.
The more than 3,000 members vow to start serving clients indoors in a week.
Organizers say there's proof that salons are safe.
Coronavirus: Hair salon and barbershop owners asking Gov. Newsom for approval to do business outside
Coronavirus: Hair salon and barbershop owners asking Governor Gavin Newsom for approval to do business outside