Taking biotin for your hair and nails
People take biotin supplements to improve their hair, skin, and nails, but the pills aren't doing much.
People who are deficient in biotin can experience hair loss, skin rashes, or brittle nails. But you're probably not deficient in biotin, according to an expert.
"Biotin deficiencies are really rare, mainly because it's found in so many foods, and also because you don't even need all that much."
There's no strong evidence that biotin supplements help the hair, skin, or nails of people who already have enough biotin in their systems. If you think you might be deficient, ask a doctor.
[Photo via @khloekardashian]