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

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

Update: 2023-04-1046


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.

For the full show notes, visit

Thank you to our sponsors

AG1 (Athletic Greens):

Helix Sleep:




Supplements from Momentous


(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

Title Card Photo Credit: Mike Blabac


Comments (3)

shohre javadi

Thanks for your great videos and podcasts on media. I’ve listened many of them and learned a lot👌As a woman, I used Finasteride several years but when I came Canada last year, doctors didn’t prescribe it for me since I was in my maternity ages. And all the results gone, and my hair loss worsen after that. Now I wonder when you spoke about that, did you mean women as well or not? Your answer will be so important to me. Because I am now struggling to start it again or not,

Jul 25th

morteza khakpour

after this episode I should start taking finasteride 😀

Jun 1st

Namia Koosehlar


May 13th
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The Science of Healthy Hair, Hair Loss and How to Regrow Hair

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

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