- 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.
-
Stretching The Truth: 3 Misrepresented Claims From Hair Loss Studies
-
Minoxidil Shedding – What to Expect & When it Stops
-
Does Minoxidil Cause Skin Aging?
-
Thermus Thermophilus Extract Does Not Increase Hair Density By 96.88%, Despite Dermatology Times’ Claims.
-
Does Retinoic Acid (Tretinoin) Improve Hair Growth From Minoxidil?
-
Topical Cetirizine: An Anti-Histamine That Regrows Hair? (New Evidence)
-
Scalp Psoriasis: Symptoms, Causes, and Effects on Hair Loss
-
Can Methylene Blue Regrow Your Hair? A Look At The Science.
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 Sarah King, PhDJun 12, 2025Stretching The Truth: 3 Misrepresented Claims From Hair Loss Studies
Think that new hair growth product sounds too good to be true? It might be. In this article, we break down how research findings in hair loss treatments are often misinterpreted, or worse, misrepresented. From misleading percentages to press release spin, we highlight real examples involving TTFE, N...
By Ben Fletcher, PhDJun 10, 2025Minoxidil Shedding – What to Expect & When it Stops
Starting minoxidil and seeing more hair fall out? You’re not alone. This article breaks down the phenomenon known as the “dread shed”—a temporary spike in hair loss that can happen when beginning treatment. We explore why this shedding occurs, what it means for your hair cycle, and whether it’s actu...
By Ben Fletcher, PhDMay 19, 2025Does Minoxidil Cause Skin Aging?
Online discussions have raised alarms about a possible link between minoxidil and premature skin aging, especially among users reporting under-eye puffiness, dryness, and fine lines. Could a hair loss treatment really be affecting facial skin quality? This article takes a balanced look at the scienc...
By Sarah King, PhDMay 12, 2025Thermus Thermophilus Extract Does Not Increase Hair Density By 96.88%, Despite Dermatology Times’ Claims.
Can Thermus Thermophilus Extract (TTFE) really boost hair density by 96.88%? That’s what a recent Dermatology Times article claimed. But a closer look at the original study tells a very different story. In this article, we unpack the misleading interpretation of TTFE data, why it matters even when i...
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 Ben Fletcher, PhDApr 29, 2025Topical Cetirizine: An Anti-Histamine That Regrows Hair? (New Evidence)
Curious if an allergy medication could help with hair loss? Cetirizine, a second-generation antihistamine, is best known for treating allergies, but emerging research suggests it might also promote hair growth when applied topically. From reducing inflammation and mast cell activity to lowering leve...
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 11, 2025Can Methylene Blue Regrow Your Hair? A Look At The Science.
Methylene blue, a well-known compound with antioxidant and anti-aging properties, has recently gained attention as a potential hair loss treatment. But does the science support the hype? In this article, we examine preclinical research on methylene blue, its mechanisms related to hair health, and wh...
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 Sarah King, PhDFeb 25, 2025Seborrheic Dermatitis: Symptoms, Treatments, & Its Impact On Hair Loss
Seborrheic dermatitis is a common cause of dandruff, but what’s really happening to your scalp when it flares up? From excess sebum and yeast overgrowth to genetic factors, this condition has multiple triggers. Wondering what treatments work best and how to manage symptoms long-term? Check out our i...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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