- 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.
-
Best Minoxidil for Men: Top Picks for 2025
-
Natural vs. Pharmaceutical DHT Blockers: Ranked
-
Oral Dutasteride for Hair Loss: Results, Side Effects, Dosing & How It Compares to Finasteride
-
Topical & Mesotherapy Dutasteride for Hair Loss: Evidence, Dosing, Safety
-
Oral Finasteride Before and After: Real Case Studies
-
Does Topical Finasteride Work?
-
Women: Is Topical Minoxidil Safe While Trying to Conceive?
-
Men: Is Topical Minoxidil Safe While Trying to Conceive?
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
IngredientsPharmaceuticalsNatural RemediesCompany Reviews
By Sarah King, PhDNov 26, 2025Best Minoxidil for Men: Top Picks for 2025
With countless hair loss products on the market, choosing the right minoxidil can be overwhelming. This evidence-based guide ranks the best minoxidil treatments for men in 2025, including prescription and over-the-counter options, based on effectiveness, safety, customization, and value. Discover wh...
By Michael Williams, PhDNov 25, 2025Natural vs. Pharmaceutical DHT Blockers: Ranked
Natural and pharmaceutical DHT blockers both aim to slow or reverse hair loss, but their strength, safety, and side effects vary widely. This article ranks the most common DHT inhibitors from weakest to strongest, comparing how natural compounds, such as pumpkin seed oil and EGCG, stack up against p...
By Perfect Hair Health TeamNov 17, 2025Oral Dutasteride for Hair Loss: Results, Side Effects, Dosing & How It Compares to Finasteride
Dutasteride is one of the most powerful treatments for male pattern hair loss, offering faster and greater regrowth than finasteride with comparable or even lower rates of sexual side effects. This comprehensive guide explains how dutasteride works, how it compares to finasteride in clinical trials,...
By Perfect Hair Health TeamNov 17, 2025Topical & Mesotherapy Dutasteride for Hair Loss: Evidence, Dosing, Safety
Dutasteride isn’t just oral anymore; emerging research shows that topical and mesotherapy dutasteride can significantly improve androgenic alopecia while keeping most of the action localized to the scalp. This guide breaks down the science, realistic regrowth expectations, dosing ranges, and how the...
By Perfect Hair Health TeamNov 13, 2025Oral Finasteride Before and After: Real Case Studies
Oral finasteride remains the gold-standard treatment for male pattern hair loss, with decades of data showing consistent improvement in density and prevention of further thinning. However, dramatic online regrowth photos can lead to unrealistic expectations. In your regrowth journey, it’s important ...
By Sarah King, PhDNov 13, 2025Does Topical Finasteride Work?
Topical finasteride is quickly emerging as a compelling alternative to oral finasteride for treating androgenic alopecia, promising similar hair regrowth with significantly fewer systemic side effects. But does topical finasteride work? In this article, we break down how topical finasteride works, h...
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 Michael Williams, PhDNov 12, 2025Finasteride and Dry Eye Disease: Is There A Connection?
Finasteride is a well-established treatment for hair loss, but some reports suggest it may contribute to dry eye disease. This article examines how finasteride’s hormonal effects may impact tear production, reviews current research findings, and provides practical steps for managing or preventing ey...
By Perfect Hair Health TeamNov 11, 20255 Ways to Prevent Hair Loss While Taking Testosterone
Testosterone replacement therapy can transform energy, mood, and libido, but it often comes with an unwelcome side effect: accelerated hair loss. This guide breaks down the science of how TRT ramps up DHT and outlines five evidence-based strategies to protect your hair without sacrificing hormonal b... - Mission Statement
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