- 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.
-
Genetic Tests: A Breakthrough for Personalized Hair Loss Treatments?
-
Do Chinese Herbs Help Regrow Hair? A Look At Traditional Remedies
-
Cannabidiol (CBD) Increases Hair Counts By 246%? Not So Fast.
-
Creatine: Does It Worsen Hair Loss? It Depends On The Hair Loss Type.
-
Can Progesterone Improve Hair Regrowth?
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CRABP2: Can This Gene Predict Regrowth From Retinoids?
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BTD: Can This Gene Predict Regrowth From Biotin?
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COL1A1: Can This Gene Predict Regrowth From Collagen Support?
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, PhDApr 25, 2024Zinc Supplements For Hair Loss: A Hard Look Into The Science
Zinc is a popular trace element found in hair growth supplements. Animal studies suggest that zinc is required for healthy hair cycling. Human studies suggest that zinc deficiencies can cause hair loss from telogen effluvium. One study found that zinc sulfate might help with non-descript hair loss i...
By Sarah King, PhDNov 21, 2024Genetic Tests: A Breakthrough for Personalized Hair Loss Treatments?
Genetic testing is trending in the hair loss industry. The premise? Our genes hold the secrets to better hair growth, and genetic testing can help hair loss sufferers unlock new levels of hair gains with customized treatments. It’s an enticing proposition, and one that holds little-to-no scien...
By Sarah King, PhDSep 27, 2024Creatine: Does It Worsen Hair Loss? It Depends On The Hair Loss Type.
Creatine, a substance that supports energy production in the muscles and brain, is commonly used as a supplement to boost athletic performance. However, its potential link to hair loss has raised concerns, particularly due to its effect on dihydrotestosterone (DHT), a hormone associated with androge...
By Ben Fletcher, PhDSep 8, 2024BTD: Can This Gene Predict Regrowth From Biotin?
The BTD gene, responsible for encoding the enzyme biotinidase, is crucial for biotin metabolism. Biotin, or vitamin B7, plays a significant role in hair health, and biotinidase deficiency—caused by BTD polymorphisms—can lead to hair loss conditions like alopecia. While some studies suggest that biot...
By Ben Fletcher, PhDSep 4, 2024COL1A1: Can This Gene Predict Regrowth From Collagen Support?
The COL1A1 gene, responsible for producing a key component of type 1 collagen, has been associated with hair growth and structure. Certain genetic variations in COL1A1 might affect the balance of collagen chains, potentially influencing hair loss and the response to treatments. However, the current ...
By Sarah King, PhDMay 2, 2024Green Tea: Is It An Effective Hair Loss Treatment?
Green tea extract contains epigallocatechin gallate (EGCG) and many other compounds that allegedly improve hair growth. On the one hand, in vitro studies suggest that EGCG might inhibit hair follicle damage. On the other hand, human studies do not yet exist showing that green tea – as a supplement o...
By Sarah King, PhDApr 25, 2024Inositol: A Sugar That Supports Hair Growth? | Clinical Study Analysis
Inositol (in the form of myo-inositol or D-chiro-inositol) is found in many hair growth supplements. Clinical studies suggest inositol might normalize androgen levels in women with polycystic ovarian syndrome (PCOS). For these reasons, marketers often claim inositol can help regrow hair for those wi...
By Sarah King, PhDApr 19, 2024Reparex (For Grey Hair): Does It Really Reverse Greying? | Scientific Analysis
Reparex’s Against Grey Hair claims to “restore hair color naturally from the inside out”. During our company investigation, we found discrepancies between Reparex’s marketing claims and the mechanisms governing the graying process. We also found duplicative before-after photo...
By Sarah King, PhDApr 19, 2024Vitamin C (Ascorbic Acid) For Hair Regrowth: Fact vs. Fiction
Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that is naturally present in citrus fruits. Because humans lack an enzyme called gulonolactone oxidase, vitamin C must be taken up through the diet. The majority of evidence concerning vitamin C and its potential for hair growth is f...
By Richard Clayton, PhDApr 19, 2024Amino Acids To Treat Hair Loss? A Small Literature Review
Amino acids are biomolecules and the building blocks of proteins. Marketers often misappropriate petri dish, animal, and small-scale human studies to suggest that the amino acids lysine, arginine, proline, & thiamine might help treat hair loss. But is this supported by clinical studies on humans...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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