- About
- Mission Statement
Education. Evidence. Regrowth.
- Education.
Prioritize knowledge. Make better choices.
- Evidence.
Sort good studies from the bad.
- Regrowth.
Get bigger hair gains.
Team MembersPhD's, resarchers, & consumer advocates.
- Rob English
Founder, researcher, & consumer advocate
- Research Team
Our team of PhD’s, researchers, & more
Editorial PolicyDiscover how we conduct our research.
ContactHave questions? Contact us.
Before-Afters- Transformation Photos
Our library of before-after photos.
- — Jenna, 31, U.S.A.
I have attached my before and afters of my progress since joining this group...
- — Tom, 30, U.K.
I’m convinced I’ve recovered to probably the hairline I had 3 years ago. Super stoked…
- — Rabih, 30’s, U.S.A.
My friends actually told me, “Your hairline improved. Your hair looks thicker...
- — RDB, 35, New York, U.S.A.
I also feel my hair has a different texture to it now…
- — Aayush, 20’s, Boston, MA
Firstly thank you for your work in this field. I am immensely grateful that...
- — Ben M., U.S.A
I just wanted to thank you for all your research, for introducing me to this method...
- — Raul, 50, Spain
To be honest I am having fun with all this and I still don’t know how much...
- — Lisa, 52, U.S.
I see a massive amount of regrowth that is all less than about 8 cm long...
Client Testimonials150+ member experiences.
Scroll DownPopular Treatments- Treatments
Popular treatments. But do they work?
- Finasteride
- Oral
- Topical
- Dutasteride
- Oral
- Topical
- Mesotherapy
- Minoxidil
- Oral
- Topical
- Ketoconazole
- Shampoo
- Topical
- Low-Level Laser Therapy
- Therapy
- Microneedling
- Therapy
- Platelet-Rich Plasma Therapy (PRP)
- Therapy
- Scalp Massages
- Therapy
- More
IngredientsTop-selling ingredients, quantified.
- Saw Palmetto
- Redensyl
- Melatonin
- Caffeine
- Biotin
- Rosemary Oil
- Lilac Stem Cells
- Hydrolyzed Wheat Protein
- Sodium Lauryl Sulfate
- More
ProductsThe truth about hair loss "best sellers".
- Minoxidil Tablets
Xyon Health
- Finasteride
Strut Health
- Hair Growth Supplements
Happy Head
- REVITA Tablets for Hair Growth Support
DS Laboratories
- FoliGROWTH Ultimate Hair Neutraceutical
Advanced Trichology
- Enhance Hair Density Serum
Fully Vital
- Topical Finasteride and Minoxidil
Xyon Health
- HairOmega Foaming Hair Growth Serum
DrFormulas
- Bio-Cleansing Shampoo
Revivogen MD
- more
Key MetricsStandardized rubrics to evaluate all treatments.
- Evidence Quality
Is this treatment well studied?
- Regrowth Potential
How much regrowth can you expect?
- Long-Term Viability
Is this treatment safe & sustainable?
Free Research- Free Resources
Apps, tools, guides, freebies, & more.
- Free CalculatorTopical Finasteride Calculator
- Free Interactive GuideInteractive Guide: What Causes Hair Loss?
- Free ResourceFree Guide: Standardized Scalp Massages
- Free Course7-Day Hair Loss Email Course
- Free DatabaseIngredients Database
- Free Interactive GuideInteractive Guide: Hair Loss Disorders
- Free DatabaseTreatment Guides
- Free Lab TestsProduct Lab Tests: Purity & Potency
- Free Video & Write-upEvidence Quality Masterclass
- Free Interactive GuideDermatology Appointment Guide
- More
Articles100+ free articles.
-
Does Ozempic Cause Hair Loss?
-
Does Masturbation Cause Hair Loss?
-
6 Best Hair Loss Treatments for Women
-
10 Best Shampoos for Thinning Hair Men
-
A New Way to Regrow Hair? Inside the Science of PP-405
-
AMP-303 Hair Injections: How Strong is the Evidence?
-
Ro Hair Loss Review 2026: What They Don’t Tell You
-
Ulo Review: #1 Customized Hair Loss Treatment in 2026
PublicationsOur team’s peer-reviewed studies.
- Microneedling and Its Use in Hair Loss Disorders: A Systematic Review
- Use of Botulinum Toxin for Androgenic Alopecia: A Systematic Review
- Conflicting Reports Regarding the Histopathological Features of Androgenic Alopecia
- Self-Assessments of Standardized Scalp Massages for Androgenic Alopecia: Survey Results
- A Hypothetical Pathogenesis Model For Androgenic Alopecia:Clarifying The Dihydrotestosterone Paradox And Rate-Limiting Recovery Factors
Menu- AboutAbout
- Mission Statement
Education. Evidence. Regrowth.
- Team Members
PhD's, resarchers, & consumer advocates.
- Editorial Policy
Discover how we conduct our research.
- Contact
Have questions? Contact us.
- Before-Afters
Before-Afters- Transformation Photos
Our library of before-after photos.
- Client Testimonials
Read the experiences of members
Before-Afters/ Client Testimonials- Popular Treatments
-
Articles
Explore the science behind hair loss and hair growth. Our in-depth articles cover topics ranging from natural remedies to pharmaceuticals to breakthroughs in hair loss science. Want to request an article topic? Contact us.
IngredientsPharmaceuticalsNatural RemediesCompany Reviews
By Michael Williams, PhDNov 12, 2025Women: Is Topical Minoxidil Safe While Trying to Conceive?
Topical minoxidil is the most widely used treatment for female hair loss, but is it safe when trying to conceive? Here’s what current research says about fertility, pregnancy, and reproductive risks.
By Michael Williams, PhDNov 12, 2025Men: Is Topical Minoxidil Safe While Trying to Conceive?
Many men use topical minoxidil to combat hair loss, but is it safe to continue while trying to conceive? Curious how the science stacks up and what experts actually recommend? Explore our evidence-based review to learn the facts about topical minoxidil and male fertility....
By Sarah King, PhDNov 8, 2025Minoxidil Side Effects: Everything You Need To Know
Minoxidil is an FDA-approved treatment for androgenic alopecia, but its use can come with side effects – from mild scalp irritation to cardiovascular risks. This comprehensive guide assess common and rare side effects from topical minoxidil and oral minoxidil – along with mitigation strategies....
By Perfect Hair Health TeamSep 24, 2025Topical Dutasteride Before and After: 10 Successes
Recent clinical data show that topical dutasteride offers promising hair regrowth and reduced side effects, but results vary widely, and more research is needed. Learn how to interpret anecdotal stories, set realistic goals, and combine therapies for the best outcomes....
By Perfect Hair Health TeamSep 10, 2025Dutasteride Before and After: 10 Success Stories
Oral dutasteride is one of the most powerful treatments for androgenic alopecia, offering deeper DHT suppression than finasteride. But what kind of results should you realistically expect? In this article, we break down how dutasteride works, what clinical studies actually show, how typical outcomes...
By Sarah King, PhDJul 16, 2025Topical Minoxidil for Hair Growth: Efficacy, Safety, and How to Enhance Results
Topical minoxidil is the most established over-the-counter treatment for hair loss, with decades of use behind its FDA approval. But how does it actually work, and what determines whether it will work for you? In this article, we explore the science behind topical minoxidil, its strengths and limita...
By Sarah King, PhDMay 5, 2025Does Retinoic Acid (Tretinoin) Improve Hair Growth From Minoxidil?
Retinoic acid, a biologically active form of vitamin A, has long been known for its role in skin health, but could it also help with hair loss? In this article, we explore the science behind retinoic acid and its derivative tretinoin, their effects on hair follicle stem cells, and whether clinical s...
By Sarah King, PhDMar 25, 2025Scalp Psoriasis: Symptoms, Causes, and Effects on Hair Loss
Scalp psoriasis goes beyond surface-level flaking; it’s a chronic autoimmune condition driven by genetic and immune system factors. From thick plaques and itching to potential hair loss, it can seriously impact daily life. Curious about what causes it, how to tell it apart from similar conditions, a...
By Sarah King, PhDMar 4, 2025Hair Loss Breakthroughs or Media Hype? Stem Cell Secretome Treatments
Stem cell secretome treatments are making headlines as the next big breakthrough in hair regrowth—but do they really work? While the science behind exosomes and growth factors sounds promising, media hype often overshadows the need for rigorous clinical trials. Curious about the real evidence behind...
By Ben Fletcher, PhDJan 13, 2025Burdock Root For Hair Loss? A Look Into The Evidence
Burdock root, derived from the plant Arctium lappa, has long been used in traditional medicine for its purported anti-inflammatory, antimicrobial, and antioxidant properties. In recent years, it has been included in natural hair loss treatments, with claims that it promotes hair growth. Some studies...Stop guessing which hair loss
treatments actually workInstead, just read our cheat sheet
You’ll get the facts on nine “natural” and “conventional” hair loss treatments: how they work, how much hair they’ll regrow, their limitations, and what their marketers don’t want you know.
- Mission Statement
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