MSM, or methylsulfonylmethane, is a naturally occurring compound rich in sulfur, commonly found in plants, animals, and humans. It’s widely recognized for its potential anti-inflammatory properties and has been used as a supplement for joint health, immune support, and more recently, for promoting hair growth. With the rise in popularity of natural remedies for hair loss, MSM has gained attention as a potential solution. But does the science really support its use? Let’s explore what MSM is, how it works, and whether it truly offers benefits for those struggling with hair thinning or baldness.

MSM provides sulfur, an essential building block for keratin, which is the primary protein that makes up hair, skin, and nails. This sulfur supports the structural integrity of the hair strands, making them stronger and less prone to breakage. By replenishing sulfur levels in the body, MSM is believed to enhance hair health from the inside out. In addition to its structural role, MSM is also thought to help reduce inflammation and oxidative stress — two underlying causes of hair follicle damage and hair shedding. This dual action may create a more favorable environment for hair to grow thicker and longer.

Although anecdotal evidence strongly supports MSM for hair growth, clinical studies are still limited. Some small-scale trials and preliminary research have shown that MSM supplementation may lead to noticeable improvements in hair length and density. One study found that subjects who used MSM along with other vitamins experienced better hair growth compared to those who did not. However, because many of these studies include other ingredients like biotin or collagen, it’s difficult to isolate MSM as the sole factor in hair improvement. Despite this, many users have reported thicker, shinier, and faster-growing hair after regular use of MSM.

The most common form of MSM used for hair health is oral supplements, though it can also be found in topical serums and shampoos. The standard dosage typically ranges from 1000 to 3000 mg per day. It’s recommended to start with a lower dose and gradually increase it to assess tolerance. MSM can be taken alone or alongside other hair-supporting nutrients such as vitamin C, which may enhance absorption. Consistency is key — noticeable results usually take about 8 to 12 weeks. As with any supplement, it’s wise to consult a healthcare provider before starting.

When compared to popular supplements like biotin, collagen, or saw palmetto, MSM holds its own due to its direct link to keratin production and anti-inflammatory benefits. Biotin mainly supports the metabolic processes involved in hair growth, while collagen provides amino acids for follicle structure. MSM complements both by supplying sulfur and helping reduce inflammation. Unlike saw palmetto, which targets hormonal pathways (like DHT reduction), MSM works on hair’s structural and environmental health. This makes it a potentially useful addition to a broader hair care regimen, particularly for those with hair loss due to nutrient deficiencies or inflammation.

MSM may be particularly helpful for individuals dealing with hair thinning due to stress, poor nutrition, or environmental damage. Those suffering from autoimmune-related hair conditions like alopecia areata may also benefit from its anti-inflammatory properties. It can also be useful for people with brittle hair, slow growth, or scalp sensitivity. However, it’s not a cure-all. People with genetic or hormone-driven baldness (like male pattern baldness) may see better results when combining MSM with other treatments such as minoxidil or hair transplant procedures. As always, individual results will vary based on the underlying cause of hair loss.

MSM is generally well-tolerated, but like any supplement, it can cause side effects in some individuals. The most commonly reported reactions include stomach discomfort, headaches, bloating, or skin rashes. These symptoms are usually mild and go away once the body adjusts to the supplement. It’s important to avoid exceeding the recommended dosage, as excessive intake may increase the risk of side effects. MSM may also interact with blood-thinning medications or anti-inflammatory drugs, so those taking such medications should consult their doctor before use. Pregnant or breastfeeding women should avoid MSM unless advised otherwise by a healthcare provider.

MSM supplements are widely available in pharmacies, health food stores, and online. They come in various forms, including capsules, powders, and liquids. When choosing a product, look for one that is labeled “pure MSM” or “OptiMSM,” as these indicate a higher level of quality and testing. Prices vary depending on the brand and formulation, but most products are affordable and offer a month’s supply per bottle. It’s advisable to buy from reputable brands that conduct third-party testing to ensure purity and safety. For topical use, MSM-infused hair serums and shampoos are also available, though their effectiveness may not be as strong as oral supplementation.