The flame-haired sportsman recorded the moment a barber snipped off his pony tail in a video called "It's only hair", which has been uploaded to YouTube.com.
In the clip, in which White sits in a barber's chair, he says, "I've been thinkin' about this one for a while but it's for a good cause, so I wanna do it.
"Somebody needs it more than I do. I haven't told anyone I'm doing this, that's the best part. I'm just gonna show up and mind freak people."
White will donate his hair to Locks of Love, a charity that provides hairpieces to children suffering from long-term hair loss.