- 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 Catherine Kennedy, PhDMay 1, 2026Does Ozempic Cause Hair Loss?
GLP-1 medications like Ozempic are transforming weight-loss treatment. But viral posts and patient reports have raised concerns about unexpected hair shedding, and emerging research hints there may be something to it. But what does the science really show? We unpack the latest evidence to examine wh...
By Michael Williams, PhDApr 10, 2026Ulo Review: #1 Customized Hair Loss Treatment in 2026
Ulo, co-founded by Perfect Hair Health, was created to address long-standing issues in the hair loss industry, from unsafe formulations to misleading personalization claims. In this review, we examine whether Ulo’s evidence-first, highly customizable approach truly sets a new benchmark for hair loss...
By Perfect Hair Health TeamMar 15, 2026Minoxidil Before and After Photos [2026] | Does It Work?
Topical minoxidil is the most widely used hair loss treatment, with decades of clinical evidence supporting its effectiveness. But while many experience stabilization and regrowth, others see little to no change. Learn why minoxidil response is so variable, how to interpret before-and-after photos, ...
By Catherine Kennedy, PhDMar 11, 2026How to Get Finasteride: Is It Over the Counter?
Finasteride is a well-established, FDA-approved treatment for hair loss. In this article, we examine how finasteride actually works, what the clinical evidence shows about effectiveness and side effects, and why medical oversight matters. Learn how to access finasteride safely in the U.S....
By Sarah King, PhDJan 31, 2026Best Minoxidil for Men: Top Picks for 2026
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 2026, including prescription and over-the-counter options, based on effectiveness, safety, customization, and value. Discover wh...
By Perfect Hair Health TeamJan 21, 2026Best Minoxidil for Women: Top 6 Brands of 2026
With so many hair-thinning treatments marketed to women, it can be difficult to separate what truly works from what’s just hype. This evidence-based guide ranks the best minoxidil options for women in 2026, including prescription and over-the-counter formulas, based on effectiveness, tolerability, c...
By Perfect Hair Health TeamDec 17, 2025Caffeine For Hair Loss (AGA): Evidence & Recommendations
Caffeine’s role in hair loss (and hair growth) is hotly debated. On the one hand, oral caffeine may indirectly exacerbate hair loss in those who are hyperglycemic or hypothyroid. On the other hand, topical caffeine does have efficacy as a potential hair loss intervention – at least when combin...
By Perfect Hair Health TeamDec 16, 2025Platelet-Rich Plasma (PRP): Does It Regrow Hair? Maybe, Maybe Not.
PRP can increase hair counts by 25-40% for those with androgenic alopecia. However, it’s expensive and requires ongoing injections to maintain results. It works best as an adjunct treatment, and it might be less effective for women. Before you invest in PRP, make sure to vet your dermatologist with ...
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 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...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.
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