Awasome Why Doesn T Caillou Have Hair References. Caillou can't grow hair, not because he has cancer or progeria, but because he sucks, and even his own body. Web however, one aspect of caillou’s appearance has sparked controversy and curiosity among viewers:

Web caillou was first conceived as a young baby, who usually have very little hair. Web others have jested that caillou doesn’t have hair because he ‘sucks,’ referring to his whiny personality. But the real reason falls on the.