The episode explains how to use minoxidil for hair loss, emphasizing that it supports follicles and prolongs the anagen phase but does not block DHT (with topical dutasteride mentioned as a scalp-focused DHT option). It reviews evidence that 5% topical minoxidil is optimal (better than 2% and superior to 10%), works best on the crown/vertex, and should be applied to the scalp—not the hair—with expectations set for gradual results and possible early shedding. Twice-daily topical use is recommended unless combined with 0.01% tretinoin, which can make once-daily use similarly effective, though irritation can occur. Microneedling combined with minoxidil is strongly recommended based on a 2013 RCT, with guidance on depth (0.5–1.0 mm), frequency, and waiting 12–24 hours (or longer with tretinoin) before applying minoxidil. The episode also compares oral minoxidil dosing, notes a 2024 RCT showing similar outcomes to topical at 5 mg, and details systemic side effects, monitoring, and cautions including pet toxicity with topical use.
Full Hair Loss Podcast — Wnt vs DHT
https://www.youtube.com/watch?v=bswq-Qhfebs
Minoxidil + Microneedling — 2013 Study
https://pmc.ncbi.nlm.nih.gov/articles/PMC3746236/
5% vs 2% Topical Minoxidil
https://pubmed.ncbi.nlm.nih.gov/12196747/
5% vs 10% Topical Minoxidil
https://pubmed.ncbi.nlm.nih.gov/31403367/
Minoxidil + 0.01% Tretinoin Study
https://pubmed.ncbi.nlm.nih.gov/17902730/
Oral vs Topical Minoxidil — 2024 Study
https://pmc.ncbi.nlm.nih.gov/articles/PMC11007651/
Topical Dutasteride Study
https://pmc.ncbi.nlm.nih.gov/articles/PMC12405733/
Topical Minoxidil Drug Information
https://medlineplus.gov/druginfo/meds/a689003.html
Oral Minoxidil Drug Information
https://medlineplus.gov/druginfo/meds/a682608.html
Tretinoin Drug Information
https://medlineplus.gov/druginfo/meds/a682437.html
Dutasteride Drug Information
https://medlineplus.gov/druginfo/meds/a603001.html
Minoxidil Toxicity in Dogs and Cats
https://pubmed.ncbi.nlm.nih.gov/34370845/
Sildenafil / Viagra Drug Information
https://medlineplus.gov/druginfo/meds/a699015.html
Tadalafil / Cialis Drug Information
https://medlineplus.gov/druginfo/meds/a604008.html
Show Notes
00:00 Welcome to the Hart2Heart Podcast
00:45 Minoxidil Basics
01:43 DHT And What It Misses
03:07 How Minoxidil Works
03:55 Best Areas To Treat
04:30 Choosing The Right Strength
05:55 Once Or Twice Daily
08:28 Applying It Correctly
10:10 Microneedling Protocol
15:17 Formulations And Routine
18:14 Topical Side Effects
19:34 Shedding And Pet Safety
20:44 Oral Minoxidil Overview
22:53 Dosing And Risks
27:39 Combining Oral And Topical
28:36 Final Takeaways
The Hart2Heart podcast is hosted by family physician Dr. Michael Hart, who is dedicated to cutting through the noise and uncovering the most effective strategies for optimizing health, longevity, and peak performance.
This podcast dives deep into evidence-based approaches to hormone balance, peptides, sleep optimization, nutrition, psychedelics, supplements, exercise protocols, leveraging sunlight, and de-prescribing pharmaceuticals — using medications only when absolutely necessary.
Beyond health science, we explore the intersection of public health and politics, exposing how policy decisions shape our health landscape and what actionable steps people can take to reclaim control over their well-being.
Guests range from out-of-the-box thinking physicians such as Dr. Casey Means (author of "Good Energy") and Dr. Roger Sehult (Medcram lectures) to public health experts such as Dr. Jay Bhattacharya (Director of the National Institutes of Health (NIH) and Dr. Marty Mckary
(Commissioner of the Food and Drug Administration (FDA) and high-profile names such as
Zuby and Mark Sisson (Primal Blueprint and Primal Kitchen).
If you're ready to take control of your health and performance, this podcast is for you.We cut through the jargon and deliver practical, no-BS advice that you can implement in your daily life, empowering you to make positive changes for your well-being.
Connect with Dr. Mike Hart
Instagram: @drmikehart
Twitter: @drmikehart
Facebook: @drmikehart
