biotin
Strong hair and nails — a full protocol, not just biotin
The short answer to Googling hair-and-nail supplements is biotin. The long answer is a protocol — adequate protein, zinc and selenium for the authorised claims, iron when low, and the awareness to ...
Biotin for hair and nails: the evidence, and what most marketing gets wrong
Biotin has spent a decade as the go-to vitamin for better hair and stronger nails. Most marketing runs well ahead of the biochemistry. What biotin genuinely does, what the research shows, and a lab...