Peppermint Oil for Hair Growth: Benefits, Side Effects, Before & After
BY TRYBELLO
Jul 31, 2025
Key Takeaways
- Peppermint oil may promote hair growth by increasing blood circulation to hair follicles and extending the anagen (growth) phase of the hair cycle
- Research shows peppermint oil outperformed minoxidil in animal studies, achieving more hair growth over 4 weeks
- Always dilute peppermint oil with a carrier oil (3–5% concentration) to avoid scalp irritation and potential side effects
- Beyond growth stimulation, peppermint oil offers additional benefits, including dandruff control, scalp soothing, and natural shine enhancement
- Trybello's Bello Hair Helper Spray captures peppermint oil's circulation-boosting power through scientifically-formulated ingredients like ginger extract and caffeine, delivering professional results without the dilution guesswork and mess of DIY treatments.
Peppermint Oil Hair Magic
Peppermint oil comes from the peppermint plant (Mentha piperita), a hybrid of watermint and spearmint that's been used for centuries in traditional medicine. What makes this essential oil special is its high concentration of menthol, the compound responsible for both its distinctive cooling sensation and many of its therapeutic properties. When applied to your scalp, peppermint oil creates a refreshing tingle that signals increased blood flow to your hair follicles.
Unlike harsh chemical treatments, peppermint oil works with your body's natural processes to promote hair growth. The oil contains powerful vasodilating properties that expand blood vessels beneath the scalp, delivering more oxygen and nutrients to hungry hair follicles. This increased nourishment helps extend the anagen (growth) phase of your hair cycle, potentially resulting in faster growth and thicker strands.
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Scientific Hair Growth Evidence
One of the most cited research on peppermint oil for hair growth comes from a groundbreaking 2014 study published in Toxicological Research. Researchers divided laboratory mice into four groups, each receiving different treatments: saline solution (control), jojoba oil, 3% minoxidil (the active ingredient in Rogaine), or 3% peppermint essential oil. After 4 weeks, the peppermint oil group showed significantly more hair growth than all other groups!
The study revealed that peppermint oil both increased follicle number and depth and significantly extended the anagen (growth) phase of the hair cycle. These findings suggest peppermint oil works through multiple mechanisms to promote stronger, faster hair growth.
How It Works
Understanding the mechanics behind peppermint oil's effectiveness can help you maximize its benefits.
Blood Flow Boost
The most significant way peppermint oil promotes hair growth is by increasing blood circulation to the scalp. When applied topically, the menthol in peppermint oil acts as a vasodilator, expanding blood vessels beneath the skin.
This increased circulation delivers more oxygen, nutrients, and growth factors directly to your hair follicles. You'll typically feel this action as a pleasant cooling or tingling sensation within minutes of application.
Anti-inflammatory Action
Chronic scalp inflammation can damage hair follicles and contribute to hair loss over time. Peppermint oil contains powerful anti-inflammatory compounds that help reduce irritation and calm an inflamed scalp.
These properties are particularly valuable for conditions like seborrheic dermatitis or psoriasis that can impair healthy hair growth.
Hair Benefits Beyond Growth
Dandruff Defense
The antifungal properties of peppermint oil make it particularly effective against dandruff.
Many cases of dandruff are caused by an overgrowth of Malassezia, a yeast-like fungus that thrives on the scalp. Peppermint oil naturally inhibits fungal growth while soothing irritation and reducing inflammation that contributes to flaking.
Regular application can help balance the scalp's natural ecosystem, preventing the overgrowth of problematic microorganisms.
Scalp Soother
An itchy, irritated scalp can be both uncomfortable and detrimental to hair growth. Peppermint oil's natural cooling and calming properties provide immediate relief from itching and irritation.
The menthol activates cold-sensitive receptors in the skin, creating a cooling sensation that masks itching and discomfort while the oil's anti-inflammatory compounds address the underlying causes.
Shine Enhancer
Beyond its benefits for new growth, peppermint oil can enhance the appearance of existing hair by increasing natural shine. The oil helps smooth the cuticle layer of each strand, allowing light to reflect more evenly along the hair shaft.
This results in visibly shinier, healthier-looking hair without the heavy residue often left by commercial shine products.
Application Methods
The application method you use in getting peppermint oil to your scalp can either boost hair growth or cause irritation.
DIY Growth Serum
Creating your own peppermint oil hair growth serum allows you to customize the formula to your specific needs. For a basic growth-stimulating serum, combine 10–15 drops of peppermint essential oil with 2 tablespoons of a carrier oil like jojoba, coconut, or castor oil. This creates approximately a 3–5% dilution, which is optimal for stimulating growth without causing irritation.
Scalp Massage Treatment
Mix 5–8 drops of peppermint oil with 1 tablespoon of carrier oil for a concentrated scalp massage. Apply the mixture directly to your scalp and massage in circular motions for 5–10 minutes before shampooing. This method maximizes blood circulation and allows for deeper penetration of the oil's active compounds.
Shampoo Enhancement
Add 2–3 drops of peppermint oil to your regular shampoo for daily use. This gentle method provides consistent exposure to the oil's benefits without overwhelming your scalp. Simply mix the oil into your palm with your shampoo before applying, ensuring even distribution throughout your hair and scalp.
Result Timeline
First Month
During the first month of using peppermint oil, you'll likely notice some immediate changes to your scalp health before seeing actual hair growth. While these changes may seem subtle, they're important indicators that the treatment is working at the cellular level.
Three-Month Mark
By the 3-month point, most consistent users experience noticeable improvements in hair density and growth rate. The baby hairs should now be growing longer and stronger, contributing to a visibly fuller hairline. Your existing hair will likely appear healthier too, with improved shine and texture that makes your overall hair look more vibrant.
Six Months Later
After 6 months of consistent application, the full benefits of peppermint oil become apparent. Those tiny baby hairs have now grown into substantial strands that blend with your existing hair, creating significantly improved density.
Side Effects of Peppermint Oil for Hair Growth
Scalp Irritation and Burning Sensation
Peppermint oil's high menthol content can cause intense burning, stinging, or irritation, especially when used undiluted or in high concentrations. This reaction is more common in people with sensitive skin or those who exceed recommended dilution ratios. The burning sensation typically subsides within 10–15 minutes but can be uncomfortable and may discourage continued use.
Allergic Reactions
Some individuals may experience allergic reactions to peppermint oil, ranging from mild skin redness to more severe symptoms like swelling, rash, or hives. These reactions can occur even with properly diluted oil and may worsen with repeated exposure. Anyone with known sensitivities to menthol or mint should perform a patch test before applying peppermint oil to their scalp.
Headaches and Dizziness
The strong menthol scent and cooling effect of peppermint oil can trigger headaches or dizziness in sensitive individuals, particularly when used in enclosed spaces or applied in large amounts. This side effect is more common during initial applications as the body adjusts to the oil's potent aroma and can be minimized by using lower concentrations and ensuring proper ventilation.
Trybello's Approach: Harnessing Nature's Cooling Power
The remarkable success of peppermint oil in promoting hair growth demonstrates nature's incredible ability to stimulate our bodies' healing processes. At Trybello, we've taken the groundbreaking research on peppermint oil and translated those findings into a modern, user-friendly solution that captures the essence of this powerful botanical remedy.
Our Bello Hair Helper Spray represents the evolution of peppermint oil's circulation-boosting principles through carefully selected ingredients that work in harmony to deliver even more comprehensive results.
The ginger extract in our Bello Hair Helper Spray provides the same warming, vasodilating effects that make peppermint oil so effective, while caffeine offers direct follicle stimulation that extends the growth phase of hair cycles. Combined with castor oil for enhanced circulation, biotin for structural support, and rice ferment filtrate rich in amino acids and growth factors, our spray delivers a multi-pathway approach to hair growth that surpasses what any single ingredient can achieve alone.
The application couldn't be simpler: just spray 1–2 pumps directly onto your scalp, massage gently to enhance absorption, and leave for 30 minutes or overnight, allowing these scientifically-backed ingredients to work their magic without the dilution concerns or potential skin reactions associated with pure essential oils.
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