Maybe you have a nine-step skincare routine. You know the difference between niacinamide and retinol. You’ve even bought a jade roller. But honestly, when was the last time you thought about the skin beneath your hair? Here’s the truth: your scalp is skin too. It’s just covered by a thick layer of hair. While you’ve been exfoliating your cheeks and moisturizing your forehead, your scalp has likely been ignored, quietly collecting product residue, dead skin cells, and oil. It’