MSM (Methylsulfonylmethane) vs Biotin for Hair Growth: Benefits, Side Effects, Before & After
BY TRYBELLO
Nov 18, 2025

Key Takeaways
- MSM strengthens hair from the inside by supplying sulfur for keratin, helping reduce breakage and improve strand resilience over time.
- Biotin supports nutrient metabolism and keratin production, making it especially helpful for slow growth and shedding linked to low biotin levels.
- MSM and biotin work best for different needs: MSM for strength and thickness, biotin for growth and reduced shedding. Many people see greater benefits when using both together.
- Both MSM and biotin are generally safe, though mild side effects can occur. MSM may cause digestive issues, and biotin can rarely cause skin reactions or interfere with lab tests.
- Pairing MSM and biotin with a supportive topical like Trybello Hair Helper Spray can help reinforce the scalp environment and reduce visible shedding for healthier-looking growth from the inside and out.
MSM vs Biotin: Which Actually Works for Hair Growth?
MSM (Methylsulfonylmethane) provides sulfur, a vital building block for keratin, helping strengthen hair structure and improve resilience. Biotin (B7) is a B vitamin that supports protein and fatty acid metabolism, helping your body convert nutrients into energy and promoting overall hair, skin, and nail health.
Both can be effective depending on your needs. Those low in biotin may see visible improvements, while MSM supports stronger, thicker hair. Many people find that using both strategically offers the most comprehensive results for healthier, fuller hair.
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What MSM Does for Hair Growth
MSM's role in hair health centers around its sulfur content, a critical element in hair follicles and strands. This organic compound delivers sulfur directly to hair follicles, supporting keratin production and enhancing overall hair strength. The sulfur in MSM helps form disulfide bonds within hair strands, essential for maintaining integrity and resilience.
Beyond structure, MSM also supports hair growth through its anti-inflammatory properties. By reducing scalp inflammation, MSM helps create a healthier environment for hair follicles, particularly benefiting those with inflammatory scalp conditions.

Regular MSM use may help improve shine, reduce breakage, and enhance overall hair strength.
How MSM Strengthens Hair Structure
MSM's main contribution to hair strength comes from supporting keratin formation. Keratin, which makes up 95% of hair, depends on sulfur to create strong disulfide bonds, giving hair its structure and resistance to breakage.
Supplementing with MSM provides the raw materials for optimal keratin production. Sulfur compounds help connect protein molecules in the hair shaft, resulting in stronger strands that are less prone to damage. MSM also improves collagen cross-linking, supports follicle structure, better anchors hair, and potentially reduces shedding.
MSM's Role in Collagen Production
MSM supports collagen synthesis, which is critical for hair follicle health. Collagen strengthens the structure around follicles, creating a foundation for healthy hair growth. As collagen production declines with age, hair thinning and slower growth may occur, making MSM particularly valuable.
Scientific Evidence Supporting MSM for Hair
While research is still being conducted, studies suggest that MSM can improve hair health. In a clinical study, MSM supplementation improved hair shine and volume at both 1 g/day and 3 g/day doses, with the higher 3 g/day dose delivering the strongest results. Participants saw up to a 12% increase in shine in 4 weeks and nearly 30% improvement by week 16, along with noticeable increases in hair volume.
MSM is generally safe at doses under 4845.6 mg/day, with only mild side effects reported, supporting its safety as a dietary supplement.
Typical Results Timeline With MSM
Patience is key when using MSM. Most users notice stronger, less brittle hair after 6–8 weeks, with more significant improvements in texture and appearance appearing after 3–4 months, consistent with clinical findings.
Biotin's Impact on Hair Health
Biotin, a crucial B-vitamin (B7), plays a key role in hair health by supporting protein metabolism essential for hair growth. Often called the "hair vitamin," it helps convert nutrients into energy and promotes keratin production, maintaining healthy hair cycles and stronger growth. Unlike MSM, which provides structural support, biotin works metabolically, ensuring your body efficiently processes nutrients needed for hair production and potentially extending the growth phase of hair follicles.
How Biotin Builds Stronger Keratin
Biotin acts as a coenzyme in protein synthesis, activating enzymes that add amino acids to form keratin, creating stronger, more resilient hair. It also regulates gene expression related to keratin production and supports fatty acid metabolism, which contributes to natural hair oils. Adequate biotin levels help build the keratin framework for thicker, healthier strands with reduced breakage.

Adequate biotin intake can promote healthier growth cycles and reduce hair breakage.
Connection Between Biotin Deficiency and Hair Loss
True biotin deficiency is rare but can cause noticeable hair loss, brittle nails, skin rashes, and fatigue. Those at higher risk include pregnant women, people with alcohol dependency, individuals with biotinidase deficiency, and those on long-term anticonvulsants. For these groups, supplementation can address deficiencies and support hair growth.
Clinical Studies on Biotin Supplementation
Research suggests biotin delivers the greatest hair-health benefits in individuals with a deficiency or increased nutritional needs. In those with normal levels, benefits are more modest, but combining biotin with nutrients like zinc, selenium, and other B vitamins offers more comprehensive support for hair production.
Expected Timeline for Biotin Results
Consistent biotin use typically shows visible improvements in 3–6 months, aligning with the hair growth cycle. Initial changes include reduced shedding, followed by improvements in texture and thickness. For deficiency cases, results may appear sooner, sometimes within the first month.
Direct Comparison: MSM vs Biotin Effectiveness
MSM and biotin support hair differently. MSM strengthens hair structure through sulfur and collagen, while biotin boosts metabolic processes for efficient nutrient use. This makes them complementary rather than competitive. Effectiveness varies based on hair type, nutritional status, and specific concerns. Fine or brittle hair may benefit more from MSM, while slow-growing hair might respond better to biotin.
Hair Growth Rate Differences
Biotin can directly influence hair growth, especially in cases of deficiency, by extending the active growth phase of follicles. MSM improves growth quality by strengthening hair and reducing breakage, which helps retain length and creates the appearance of faster growth, even if production speed remains the same.
Hair Thickness and Volume Results
MSM enhances strand thickness through keratin cross-linking and sulfur incorporation, improving strength and resistance to damage. Biotin optimizes keratin production and may activate dormant follicles, boosting density and overall volume. Combined use addresses both structural integrity and metabolic efficiency, producing fuller, thicker, and healthier-looking hair.
Before and After Evidence
Biotin often shows improved hair density and reduced shedding after 3–4 months, particularly in those with suboptimal levels. MSM results are seen in enhanced texture, shine, and manageability, with hair appearing stronger and healthier even before significant length changes. Using both together tends to produce the most well-rounded improvements across growth, thickness, and overall hair quality.
How to Use MSM for Hair Growth
Consistency matters when using MSM for hair benefits. This sulfur compound works gradually to improve hair structure, so a regular supplementation routine is essential. Most benefits come from oral intake, which allows sulfur to be incorporated into new hair growth. Pairing MSM with vitamin C can enhance absorption, and combining it with collagen supplements may provide added structural support.
Topical vs Oral MSM Applications
Oral supplementation remains primary, but topical MSM in shampoos, conditioners, or leave-in treatments may support scalp circulation, reduce inflammation, and improve follicle health. Topical use should complement oral intake, as structural benefits mainly come from internal supplementation.
Best Forms of MSM Supplements
OptiMSM is the premium form, used in clinical studies and purified through distillation for high purity. Capsules offer convenience and precise dosing, powders allow flexibility and easy mixing, and MSM crystals are another option, though they require dissolving and may have a stronger taste.
Best Ways to Take Biotin
Biotin supplementation is simple and effective when taken consistently. As a water-soluble vitamin, it doesn’t accumulate in the body, making daily intake important. Many users prefer taking it in the morning for routine consistency. Some supplements include complementary ingredients like collagen, zinc, or other B-vitamins to enhance hair benefits.
Food Sources Rich in Biotin
Biotin-rich foods help maintain levels naturally. Egg yolks provide ~10 mcg each, while organ meats like liver offer about 30 mcg per 3-ounce serving. Plant sources include nuts (almonds, walnuts), seeds (pumpkin, sunflower), sweet potatoes, avocados, mushrooms, and soybeans. Regular inclusion in meals supports overall hair health.
Biotin-Infused Hair Products: Do They Work?
Biotin-infused shampoos, conditioners, and leave-in treatments can help strengthen strands, improve shine, and enhance hair manageability. While oral biotin supports growth from within, topical products deliver nutrients directly to the scalp, complementing supplementation and creating a healthier environment for follicles. Using both together maximizes hair quality and overall scalp health.
Side Effects and Safety Concerns
Both MSM and biotin are generally safe when used as directed, but being aware of potential side effects ensures a positive experience. Most reactions are mild and often resolve as the body adjusts. Staying within recommended dosages minimizes risk while supporting hair health.
Common MSM Side Effects
MSM is usually well-tolerated. Mild digestive issues like bloating, upset stomach, or diarrhea can occur, especially at higher doses, but often improve when taken with food or split into smaller doses. Some users report headaches or fatigue initially, which usually subside. Rare allergic reactions may include itching, rash, or difficulty breathing, requiring immediate medical attention.
Biotin Side Effects to Watch For
Excess biotin is typically excreted, making toxicity rare. Mild acne or skin rashes may occur in some individuals. High doses can interfere with lab tests, particularly thyroid and troponin, so inform healthcare providers before testing.
Who Should Avoid These Supplements
Individuals with sulfur allergies should avoid MSM. Those with kidney disease or on diabetes medications should consult a doctor. Pregnant or breastfeeding women should exercise caution, though biotin is generally safe. MSM may need to be discontinued before surgery due to theoretical blood-thinning concerns.
Drug Interactions
MSM has few documented interactions but may enhance blood thinners or diabetes medications. Biotin may interact with anticonvulsants, which can deplete biotin levels, requiring dose adjustments.
MSM vs Biotin for Hair Health: Key Comparison
| Category | MSM | Biotin |
|---|---|---|
| Primary Role | Structural support via sulfur for keratin & collagen | Metabolic support for keratin production & nutrient use |
| Main Benefits | Strengthens hair fibers, boosts shine & thickness, reduces breakage | Supports growth cycle, improves density, reduces shedding (especially if deficient) |
| How It Works | Provides sulfur for disulfide bonds; supports collagen & follicle structure; reduces inflammation | Acts as a coenzyme in protein synthesis; supports fatty acid metabolism & keratin formation |
| Best For | Brittle, thinning, weak, or damaged hair; inflammatory scalp issues | Slow growth, increased shedding, deficiency-related hair loss |
| Evidence | Clinical improvements in shine & volume at 1–3 g/day | Strongest results in deficiency; synergistic with zinc, selenium, B-vitamins |
| Typical Timeline | Noticeable strength & shine in 6–8 weeks; fuller look in 3–4 months | Visible improvements in 3–6 months, faster if deficient |
| Safety | Well-tolerated up to 4g/day; mild digestive/ headache side effects possible | Generally safe; rare acne or lab-test interference at high doses |
Pair Supplements With a Targeted Topical: Our Trybello Hair Helper Spray
While MSM and biotin work internally to support stronger, healthier hair, we believe in a complete approach that also nourishes the scalp directly. That’s why we created our Trybello Hair Helper Spray, a lightweight, non-oily leave-in formula designed to complement internal nutrients and help support healthy-looking growth from the root.
With clean, science-backed ingredients like biotin, caffeine, and castor oil, our spray works to help reduce shedding, support stronger-feeling strands, and create a healthier scalp foundation, all in just a few minutes a day.

Trybello is designed to complement your nutrition routine and support hair vitality from the outside in.
Why Our Community Loves It
- Helps reduce visible shedding within weeks
- Supports fuller-looking, thicker-feeling hair over time
- Nourishes the scalp where growth begins
- Lightweight, fast-absorbing, and non-greasy
- Easy daily routine, spray, massage, leave-in or rinse
Many in our community notice smoother, shinier hair early on, followed by visible improvements in density and new baby hairs appearing with consistent use over a few months. By supporting hair both inside and out, we give your follicles the best environment to thrive, naturally and gently.
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