Does biotin make facial hair grow? While data on beard growth in particular is limited, several studies suggest that biotin supplements can improve hair thickness in people with conditions affecting hair growth, such as alopecia, though beard hair is not specifically mentioned ( 1 , 5 ).
Does biotin cause unwanted hair growth? Although the evidence to support biotin alone for hair growth is weak and limited, the evidence is slightly stronger for preventing hair loss. Still, biotin supplements are only likely to prevent hair loss and promote hair growth in people with a biotin deficiency.
Will hair vitamins cause facial hair? “Hair growth supplements are going to affect all hair follicles.” The bright side is, if you don’t already have facial hair, these supplements won’t cause you to sprout some. “Facial hair that’s not existing would only come about if the hormones in your body go out of whack and testosterone is increased,” says Crysler.
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