Part of becoming a successful grown-up is solidifying healthy daily habits, however minor and boring they may seem to be. For hair, that means applying a heat-protective product any time a blow-dryer or other hot tool gets near it. Doing this has no real instant-gratification effect on your style, thus why everyone is always tempted to skip it. But we guarantee that doing so will hold you back from the gorgeous shampoo-commercial hair of your dreams.