Solo Episode
April 10, 2023

The Science of Healthy Hair, Hair Loss and How to Regrow Hair

Listen or watch on your favorite platforms

In this episode, I explain the biology of hair, hair growth, why hair growth slows and what causes hair to stop growing and/or “fall out.” I discuss the essential role of hair stem cells and other supporting biological factors for healthy hair growth. Then I describe various approaches (mechanical and chemical) to slow hair loss by increasing blood flow to hair stem cells, including minoxidil, tadalafil, PRP, microneedling, Botox and ketoconazole treatments. I also discuss how age-related hormone changes cause hair loss and explain the effectiveness of treatments such as caffeine, saw palmetto, growth hormone, finasteride and dutasteride. For all hair growth options, I describe potential side effects, how soon to expect results and the amount of hair regrowth to expect and I highlight effective combination treatments for hair regrowth even in hair “dead” (bald) zones. For many listeners, thinning, brittle hair, or pattern baldness are a source of anxiety and stress. This episode explains the mechanisms underlying hair regrowth tools and the science behind them so that you can evaluate potential treatments and associated side-effect profiles and select the best one(s) for you.


Note: The Huberman Lab podcast has no affiliation with or financial benefit from any of the products listed below, which are provided as a useful reference only.

Ketoconazole Shampoos

Biotin Shampoos


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  • 00:00:00 Hair
  • 00:04:13 Sponsors: Helix Sleep, HVMN, ROKA
  • 00:08:04 Psychological States & Hair
  • 00:13:19 Hair Anatomy & Stem Cells
  • 00:26:05 3 Phases of Hair Growth
  • 00:35:40 Sponsor: AG1 (Athletic Greens)
  • 00:36:55 Minoxidil & Blood Flow
  • 00:45:37 Increase Blood Flow: Massage, Tadalafil, Platelet-Rich Plasma (PRP), Microneedling
  • 00:56:10 Microneedling, Minoxidil & “Dead Zones”
  • 01:00:13 Sponsor: LMNT
  • 01:01:25 Botox Treatments
  • 01:06:27 Androgens, Hair Growth & Pattern Hair Loss; Scalp vs. Beard Hair
  • 01:15:46 Topical Caffeine & Slowing Hair Loss
  • 01:21:06 IGF-1: Growth Hormone & Sermorelin; Insulin Sensitivity: Myo-Inositol
  • 01:25:52 Iron & Hair Growth
  • 01:27:04 5-Alpha Reductase & Saw Palmetto; Curcumin
  • 01:33:22 Ketoconazole & Offsetting Hair Loss
  • 01:38:46 Topical & Oral Finasteride
  • 01:51:00 Post- Finasteride Syndrome
  • 01:56:01 Dutasteride
  • 01:58:53 Mechanical & Chemical Stimulation for Hair Growth
  • 02:02:46 Zero-Cost Support, YouTube Feedback, Spotify & Apple Reviews, Sponsors, Momentous, Social Media, Neural Network Newsletter

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