J Clin Aesthet Dermatol. 2022;15(5):29–34. by Pooja Bains, MBBS, MD; Simplepreet Kaur,
J Clin Aesthet Dermatol. 2021;14(2):26–33. by Brianna De Souza, MD; Andrea Tovar-Garza,
Background. Biotin is popular in hair loss treatment supplements, although the frequency of its deficiency in patients with hair loss has not been established.