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2 Possible Causes for Beard Hair Unaffected

  • Androgens

    During puberty, increasing androgens harness the hair follicle's unique regenerative ability to replace many tiny vellus hairs with larger, darker terminal hairs ( e.g., beard[] Follicle response is epigenetically varied: some remain unaffected ( e.g., eyelashes) or are inhibited, causing balding.[]

  • Hypotrichosis 8

    Facial hair, including the eyebrows and beard, is less dense, and axillary, pubic hair and eyelashes are unaffected.[]

Further symptoms