Best MSM for Hair
Top 1 products ranked
Last reviewed May 2026
Clinical dose: 1000–3000 mg
Why MSM for Hair
MSM plays a supporting role in hair. MSM is an organic sulfur compound found naturally in foods. Sulfur is essential for the formation of connective tissue, including cartilage, tendons, and ligaments. In clinical studies, msm sulfur supports keratin production for hair, skin, and nail health.
What dose to look for
Clinical studies typically use 1000–3000 mg of msm. Most studies use 1000–3000 mg/day. OptiMSM is the most clinically studied branded form, purified via distillation. Doses up to 6000 mg/day have been used in clinical trials without significant adverse effects. Products below this range may not deliver meaningful results.
What the research says
MSM has moderate clinical evidence for hair benefits. Several clinical trials on joint comfort and inflammation, but most are small to moderate in size Learn more
Clinical research on MSM (Methylsulfonylmethane)
LOW — limited studies · 1,000–3,000 mg/day
- •Provides bioavailable sulfur needed for keratin disulfide bonds in hair structure
- •Small studies suggest possible benefits for hair and nails, but no robust RCTs exist
