If you purchase an independently reviewed product or service through a link on our website, we may receive an affiliate commission. Learn more about our policies and reviews. MSM, commonly known as ...

Methylsulfonylmethane (MSM) is a sulfur-containing compound found in plants, animals, and humans. It can also be made in a lab into a dietary supplement, which is used widely in alternative medicine.

MSM is a naturally-occurring compound that some people report can help stimulate hair growth. But there’s not yet enough research to support these claims. Talk with a doctor before using MSM for hair ...