“I am disabled,” Selma Blair announced when she went public with her multiple sclerosis (MS) diagnosis last October.

“I fall sometimes. I drop things. My memory is foggy. And my left side is asking for directions from a broken GPS. But, we are doing it. And I laugh and I don’t know exactly what I will do precisely but I will do my best.”

Since then, Blair has been incredibly candid about the realities of living with MS. She walked with a cane at the Oscars, significantly raising awareness of the condition. She posted a series of lighthearted videos to Instagram, in which she explained how MS has affected the way she applies make-up (“my fine motor skills aren’t, like, fine at this moment,” she joked during her tutorial). She cut her hair into a bob because she no longer has the strength to lift her arms and brush her hair.

And now, with a little help from seven-year-old son Arthur, Blair has shaved her head.

Selma Blair has shaved her head, and the reason why is so powerful