Biotin: Beauty Supplement Myth or Miracle?

Biotin, or vitamin B7, plays a role in metabolism and keratin structure, essential for hair, skin, and nails. However, biotin deficiency is infrequent, as a varied diet rich in eggs, nuts, and meat usually suffices. Certain groups, including pregnant or breastfeeding individuals, those with chronic alcoholism, or on long-term antiseizure medication, face a slightly elevated risk of deficiency.

For those experiencing a confirmed biotin deficiency, supplements can be beneficial and are taken under medical supervision. Yet, for the general population, taking biotin supplements is unlikely to significantly improve hair growth or nail strength. Studies show benefits primarily for those with actual biotin deficiencies, not healthy individuals.

While biotin is water-soluble and generally safe, high doses can skew certain laboratory test results, potentially masking other serious health issues. Therefore, medical professionals increasingly recommend biotin supplementation only when a deficiency has been medically diagnosed, rather than for general beauty enhancement.