Frontal Fibrosing Alopecia and Sunscreen Use: A Cross-Sectional Study of Actinic Damage

The study involved 101 patients with frontal fibrosing alopecia and 40 control subjects. It found that 69.3% of patients with frontal fibrosing alopecia had more actinic damage compared to 50% of control subjects, and 83.2% of these patients used sunscreens more frequently than 62.5% of control subjects. However, the prevalence of trichoscopic inflammatory signs, peripheral alopecia, and inflammatory infiltrate and sebaceous gland involvement in skin biopsy were similar in patients who used sunscreens and those who did not. The study concluded that the higher use of sunscreens among patients may be due to the greater actinic damage they experienced, rather than being a trigger for frontal fibrosing alopecia.