A hairdresser lops off Megan Dermody’s hair as her children Shayla, 4, and Finnian, 8, provide emotional support. Photo courtesy Megan Dermody

Finnian Dermody, 8, holds the first of three ponytails to be shaved from Megan Dermody's head.

Megan Dermody participates in St. Baldrick's "46 Mommas Shave for the Brave" event benefiting pediatric cancer research.

A newly shorn Megan Dermody with children Shayla, 4, left, and Finnian, 8, after the St. Baldrick’s “46 Mommas Shave for the Brave” event in Boston.

April Hawes gets a hug from son Spencer, 4, after geting her head shaved in the “46 Mommas Shave for the Brave” event in Boston. Photo courtesy Gina E.