Your scalp produces sebum to nourish and protect the hair shaft. Over-shampooing triggers reactive oil production, while under-washing causes sebum build-up that feeds yeast and leads to dandruff.
Fine, oily hair requires washing every 1-2 days with lightweight clarifying cleansers. Thick, curly, or coarse hair profiles should limit washing to 1-2 times per week, utilizing co-washes and deep hydrating masks.
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Board-Certified Dermatologist & Biomedical Researcher
Dr. Vivienne Chen is a board-certified dermatologist and biomedical researcher with over 12 years of clinical experience in cellular aging, peptide therapies, and skin barrier health.
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