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Your scalp health begins at the microscopic level, where lipids, proteins, and microbiota interact to keep roots balanced. One of the most critical players here is sebum: your scalp’s natural oil. Too much → greasy, clogged follicles. Too little → dryness, irritation, breakage. That’s where fatty acids step in. Different oils carry different dominant fatty acids, and each interacts with scalp biology in unique ways. [oleic acid hair benefits, sebum regulation at scalp, natural scalp oil balance, fatty acids in hair oils, castor oil, argan oil, camia]