Gross, but cool idea! Maybe you could lose hairs while rolling around? That would make hairs even more valuable. I didn't really see a need for the crystals (unless I didn't get far enough) but I feel like they were a little unnecessary. I think sticking with your core (ball of hair that gets bigger when it collects hair) is best. Losing hair would make you more mindful of where you jump as well, so that would definitely be a challenge for level design. Nice art, too!!