1. Stimulates Hair Growth & Scalp Circulation

• Vasodilation: Menthol in peppermint oil increases blood flow to the scalp, improving nutrient and oxygen delivery to hair follicles—this supports healthier hair growth and texture. InStyle+1Healthline

• Animal study evidence: A 2014 study on mice using 3% peppermint oil showed greater gains in dermal thickness, follicle number, and depth, sometimes outperforming minoxidil (a common hair-growth drug). wimpoleclinic.comSTYLECRAZEInStyle

2. Supports Scalp Health

• Antimicrobial & Anti-inflammatory: Peppermint oil helps combat dandruff, dryness, and scalp irritation by reducing yeast and inflammation. InStyleGlamourWomen's Healthmyglamm.com

• Soothing & Refreshing: Its cooling effect can calm an itchy or irritated scalp. Glamourmyglamm.comByrdie

3. Adds Shine & Strengthens Hair

• Hair strengthening: Rich in nutrients like vitamin E and minerals, peppermint oil may help reinforce hair strands and reduce breakage. Couture Hair Pronadula.comNDTV Food

• Enhances shine: It may smooth the hair cuticle, improving light reflection and making hair appear glossier. Couture Hair ProParrotfish

4. Encouraging Anecdotal Observations

• User reports: On forums like Reddit, individuals using 3% topical peppermint oil regularly (sometimes daily) noted hair regrowth that felt similar in quality to minoxidil. “Robust” regrowth near the hairline and temples was shared by some users.