They went bald to raise money and awareness for childhood cancer research.
Mignon Loh, the chief of pediatric oncology at UCSF Benioff Children's Hospital took the lead.
One young patient and his father spoke about fighting cancer at the event.
"Cancer cells are the bad guys. I take chemo to get the bad guys out," cancer survivor Rhett said.
"It's specific research that was done at UCSF as a result of grants like those given by St. Baldrick's that saved our child's life," Rhett's father said.
Rhett and his dad joined the fundraising effort.
More than $22,000 will go to St. Baldrick's Foundation to fund research programs.