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Frontal Fibrosing Alopecia and Product Allergies: What Patch Testing 133 Patients Found contact allergy frontal fibrosing alopecia research scarring alopecia sunscreen Sep 21, 2026

Frontal fibrosing alopecia, usually shortened to FFA, is a scarring type of hair loss. It mostly shows up along the front hairline, it mostly affects women after menopause, and once the inflammation h...