- 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.
- Topical Finasteride Calculator
- Interactive Guide: What Causes Hair Loss?
- Free Guide: Standardized Scalp Massages
- 7-Day Hair Loss Email Course
- Ingredients Database
- Interactive Guide: Hair Loss Disorders
- Treatment Guides
- Product Lab Tests: Purity & Potency
- Evidence Quality Masterclass
- More
Articles100+ free articles.
-
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?
-
CRABP2: Can This Gene Predict Regrowth From Retinoids?
-
BTD: Can This Gene Predict Regrowth From Biotin?
-
COL1A1: Can This Gene Predict Regrowth From Collagen Support?
-
2dDR For Hair Loss: What Do We Know So Far About This Sugar?
-
CYP19A1: Can This Gene Predict Regrowth From Hormone Therapy?
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
Ingredients database Know the truth about your
“hair growth” ingredientsNever waste another dollar on a bad product purchase. Here are the facts on 150+ popular ingredients – their evidence, regrowth, & safety – all organized by our Treatment Metrics. Want the full database? Join our Membership.
29%
Evidence
Extract 
androgenic alopecia Saw Palmetto
A herbal extract that some individuals use for its potential to inhibit DHT production, and fewer side effects than finasteride.
Regrowth PotentialLong-Term Viability30%
Evidence
Proprietary Blend
androgenic alopecia Redensyl
A patented combination of a number of ingredients with limited research to support its use.
Regrowth PotentialLong-Term Viability66%
Evidence
Pharmaceutical
androgenic alopecia Melatonin
A hormone with a number of supporting studies showing its potential for hair growth.
Regrowth PotentialLong-Term Viability54%
Evidence
Extract
Pharmaceutical
androgenic alopecia Caffeine
A topical stimulant categorized as "low risk, low reward".
Regrowth PotentialLong-Term Viability6%
Evidence
Extract 
Micronutrient 
Miscellaneous Biotin
A vitamin that may be beneficial for those with hair loss related to biotin deficiency.
Regrowth PotentialLong-Term Viability48%
Evidence
Extract
androgenic alopecia Rosemary Oil
An essential oil that is thought to inhibit 5α-reductase.
Regrowth PotentialLong-Term Viability2%
Evidence
Miscellaneous 
unstudied Lilac Stem Cells
A cutting-edge ingredient that may rejuvenate hair follicles and improve overall scalp health.
Regrowth PotentialLong-Term Viability0%
Evidence
Amino Acid
unstudied Hydrolyzed Wheat Protein
A plant-derived ingredient that can strengthen and moisturize hair, potentially reducing breakage.
Regrowth PotentialLong-Term ViabilityEvidence
Miscellaneous
unstudied Sodium Lauryl Sulfate
A common surfactant used in household cleaning and cosmetic products, that may weaken hair with long-term exposure.
Regrowth PotentialLong-Term Viability35%
Evidence
Extract
Miscellaneous Pycnogenol (Maritime Pine Bark)
An ingredient derived from maritime pine bark that may be beneficial for menopausal people.
Regrowth PotentialLong-Term Viability35%
Evidence
Extract
androgenic alopecia Pea (Sprout) Extract
A sprout which may affect hair loss through the upregulation of genes associated with hair growth.
Regrowth PotentialLong-Term Viability38%
Evidence
Extract
alopecia areata
androgenic alopecia Ginseng Root
A well-known herb that contains a number of compounds that may stimulate hair growth.
Regrowth PotentialLong-Term Viability - Mission Statement