The Peanut Butter Solution

I must be the only one to have watched this movie. I've been trying to figure out the title for my entire adult life. When I asked people if they remembered a movie about hair growing out of control, I got weird looks. I was a little haunted by it, remembering it being 'scary'....oh, our perceptions as kids :)
PS, my guru brother figured out the title from the most vague description ever in about 10 seconds.