Hair dyeing chemistry involves replacing or coating melanin pigment through chemical reaction. The claim proposes an alternate mechanism: the hair 'gets scared' and reverts to its original color through fear-induced physiological response. Hair follicles don't possess fear responses; they lack nervous systems. Yet the fact proposes that hair cells somehow perceive threat and respond through biochemical self-correction. Fear itself is sufficient to trigger chemical reversal. Fear becomes a substitute for chemistry.