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Research

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research Control of hair growth and follicle size by VEGF-mediated angiogenesis

520 citations , February 2001 in “Journal of Clinical Investigation”

This study found that VEGF significantly enhances perifollicular vascularization during the hair growth phase, accelerating hair regrowth and increasing follicle and hair size, while its inhibition retards hair growth.

research Dermal papilla cell number specifies hair size, shape and cycling and its reduction causes follicular decline

211 citations , April 2013 in “Development”

In this study, researchers found that the number of dermal papilla cells in hair follicles determines hair size and shape in mice, suggesting potential avenues for addressing hair loss.

research Effect of the gonadotrophin releasing hormone analogue, goserelin, and oestradiol replacement on sebum excretion rates and hair size in mildly hirsute women

4 citations , January 1991 in “Journal of dermatological treatment”

This study found that GnRH-A treatment significantly reduced hirsuties scores in women with mild idiopathic hirsuties but did not affect hair growth rate or diameter.

research Differences in Hair Follicle Dermal Papilla Volume are Due to Extracellular Matrix Volume and Cell Number: Implications for the Control of Hair Follicle Size and Androgen Responses

231 citations , December 1999 in “Journal of Investigative Dermatology”

This study found that the volume of a hair follicle's dermal papilla is strongly correlated with its size, primarily due to the number of cells it contains and the volume of extracellular matrix.

Scalable Production of Controllable Dermal Papilla Spheroids on PVA Surfaces and the Effects of Spheroid Size on Hair Follicle Regeneration

research Scalable production of controllable dermal papilla spheroids on PVA surfaces and the effects of spheroid size on hair follicle regeneration

78 citations , October 2012 in “Biomaterials”

This study found that both human and rat dermal papilla spheroids can induce hair follicle neogenesis, but larger spheroids increase inductivity without significantly affecting hair fiber diameter.

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Community Join

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community What size of derma roller is proper for hair regrowth?

10 upvotes 4 years ago

User has been using Minoxidil twice daily for a year with good results and is considering adding a 1.5mm titanium derma roller for better hair regrowth. They seek advice on the best derma roller size and frequency of use, suggesting once a month or every 3-4 weeks.

community New Hair Loss Treatment: Adipose Derived Secretomes

18 upvotes 1 year ago

Adipose-derived stem cell secretome showed significant improvement in hair density and growth, especially when combined with minoxidil, suggesting a synergistic effect. The study had limitations, including a small sample size and potential bias.

community 3750 Graft Hair Transplant Day 2

in Transplants 149 upvotes 1 year ago

A user underwent a 3750 graft hair transplant in Turkey, initially promised 4500 grafts, and is satisfied with the results despite some concerns about donor site size and crown coverage. The user has been on medications like finasteride and minoxidil for about four months and may consider a second transplant in the future.

community Officially Starting Hair Regimen

6 upvotes 3 years ago

The user is starting a hair loss treatment including topical finasteride/minoxidil, derma rolling, ketoconazole shampoo, vitamins, exercise, and quitting caffeine. They are seeking advice on derma roller needle size, potential side effects, and additional recommendations.

community Started balding at 16-17 but finally @21 got almost all of it back plus more and I think it made my forehead smaller

in Is this regrowth? 580 upvotes 11 months ago

The user regained hair and reduced forehead size using a routine of 1mg finasteride, 5mg minoxidil, topical minoxidil twice daily, tretinoin before minoxidil, derma stamping weekly, red light therapy daily, and ketoconazole shampoo thrice weekly. They experienced initial side effects with finasteride but adjusted the dosage over time.

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Learn

10 / 801 results

learn Scalp Micropigmentation

What kind of needle is used for scalp micropigmentation? Scalp micropigmentation typically uses specialized, sterile, single-use needles for precision.

learn Hair Transplant

Can PRP be combined with a hair transplant? Providers routinely offer PRP alongside a hair transplant and most say it speeds healing and supports graft survival; the published human studies are small and mixed, so the size of any benefit is unsettled.

learn Castor oil

Castor oil: How do you use it without ending up with greasy hair for days? Use a pea-sized amount of warmed castor oil to avoid greasy hair.

learn Exosomes

Microscopic delivery system that sends growth-promoting signals to hair follicles

learn Osteopontin

signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss

learn Bimatoprost

a synthetic prostamide used to treat eyelashes also shows promise for stimulating hair growth on scalp

learn Fluridil

How is Fluridil different from other DHT blockers like finasteride? Fluridil is a topical androgen-receptor blocker applied to the scalp, while finasteride is an oral 5-alpha-reductase inhibitor that lowers DHT throughout the body. Finasteride is FDA-approved and far better studied; Fluridil rests on one 43-man trial and is not licensed as a hair-loss medicine, so its long-term safety and effect size are unknown.

learn Overview

learn Minoxidil

An essential vasodilator with some anti-androgenic effects

learn Hair Fibers

Do hair fibers really make thinning hair look fuller, or is it just an illusion? Hair fibers create an optical illusion of fullness but do not actually thicken hair.

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Clinics

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All 47 clinic results →

Experts

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Unscored
SMP Specialist
Hairo Fallas
Newark, NJ, United States

Hairo Fallas