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research [Changes in telogen rate, hair density, hair diameter and rate of growth in androgenetic alopecia of the male. Simultaneously a contribution to the significance of dysplastic hair].

April 1986 in “PubMed”

This study observed that in men with androgenetic alopecia, frontal hair regions showed reduced density, diameter, and growth rate compared to occipital regions, worsening with advanced stages.

research Reduction of telogen rate and increase of hair density in androgenetic alopecia by a cosmetic product: Results of a randomized, prospective, vehicle‐controlled double‐blind study in men

1 citations , May 2021 in “Journal of Cosmetic Dermatology”

This study found that a cosmetic foam reduced the telogen rate in men with androgenetic alopecia, suggesting a potential benefit against male pattern hair loss.

research A 2% Oleosome-FGF-2 Fusion Extract Scalp Serum Improves Photo-trichogramDerived Hair Density, Anagen/Telogen Ratio, Hair Shaft Thickness, and Scalp Barrier Parameters in Women with Shedding-Prone Hair: A Randomized, SingleBlind, Placebo-Controlled Pilot Study

July 2026 in “International Journal of Clinical & Experimental Dermatology”

This exploratory pilot study reported that using a 2% Oleosome-FGF-2 fusion extract scalp serum twice daily for 84 days in women with telogen effluvium and brittle hair improved hair density, anagen/telogen ratio, hair shaft thickness, and scalp hydration compared to a placebo.

research Comparison of Hair Follicle Density and Anagen:Telogen Ratio between Topical Minoxidil Alone and Its Combination with Platelet-Rich Plasma Exosomes in a Mice Model of Androgenetic Alopecia

May 2026 in “Malaysian Journal of Medicine and Health Sciences”

This study found that in a testosterone-induced androgenetic alopecia mouse model, the combination of PRP-derived small extracellular vesicles and 5% minoxidil significantly improved hair follicle density and the anagen-to-telogen ratio compared to minoxidil alone, suggesting a synergistic effect that enhances hair growth.

research Exposure to gamma-rays at the telogen phase of the hair cycle inhibits hair follicle regeneration at the anagen phase in mice

6 citations , November 2013 in “International Journal of Radiation Biology”

In this study, γ-ray irradiation of mice reduced hair follicle density and pigmentation, suggesting damage to stem cells and progenitors for keratinocytes and melanocytes.

View more "telogen hair density" in research →

Community Join

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community AGA/male pattern baldness and loss of hair in the past 6months

52 upvotes 8 months ago

A 25-year-old male experienced significant hair loss due to telogen effluvium and androgenetic alopecia. He began using finasteride, minoxidil, and vitamins, seeing some regrowth but remains worried about hair density.

community 28M Experiencing Top Right and Left Side Hair Loss, Minoxidil Concerns, and Shedding in Humid Areas

in General 171 upvotes 10 months ago

The user is experiencing hair loss with symptoms of receding hairline, extreme shedding, and low density, possibly due to androgenic alopecia, diffuse thinning, retrograde alopecia, or telogen effluvium. They have used minoxidil and noticed changes in shedding patterns related to different water qualities and seborrheic dermatitis.

community Hair Color Change and Shedding: Telogen Effluvium or AGA?

in Basic Questions 36 upvotes 2 months ago

The conversation discusses hair color change and shedding, questioning if it's due to Telogen Effluvium or Androgenetic Alopecia (AGA). Treatments mentioned include Minoxidil, finasteride, and RU58841.

community Trying to understand severe shedding and progressive density loss after a successful hair transplant

8 upvotes 3 weeks ago

The user is experiencing severe shedding and progressive hair density loss after a successful hair transplant, despite using finasteride, minoxidil, microneedling, and scalp treatments. Suggestions include trying stronger treatments like oral dutasteride, topical RU58841, and higher doses of oral minoxidil.

community can we talk about the effect of DHT on hair TEXTURE (not just thickness/density)

41 upvotes 1 month ago

Finasteride treatment improved hair texture and reduced frizz for some users, though full restoration of original texture may take time. Hair texture changes were noted across the head, with some areas responding faster to treatment.

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Learn

9 / 9 results

learn Stemoxydine

Cosmetic ingredient made by L'Oréal

learn Follistatin

Protein that blocks activin, a growth-regulating signal

learn Vitamin D

Vitamin made in the skin from sunlight, also taken as a supplement

learn Botox

Can Botox reduce chronic hair shedding? Whether Botox reduces chronic shedding is unknown: one very small 2022 trial in telogen effluvium had no placebo arm, and the blood-flow theory is unproven. Scalp Botox for hair loss is off-label, and all botulinum toxin products carry an FDA boxed warning.

learn Vitamin B12

How does Vitamin B12 deficiency contribute to hair loss and thinning? Severe vitamin B12 deficiency may contribute to diffuse shedding (telogen effluvium). It is not a known cause of pattern hair loss, and a blood test is needed to confirm a deficiency.

learn Baricitinib

Can Baricitinib work if my hair loss is from stress or anxiety? Baricitinib is approved for severe alopecia areata in adults, an autoimmune condition. It has not been shown to work for stress-related shedding (telogen effluvium) and carries an FDA boxed warning.

learn Azelaic Acid

azelaic acid: Does it work for all types of hair loss or just DHT? One small randomised trial (26 women, no placebo) found no significant difference between 5% azelaic acid and 2% minoxidil for female pattern hair loss, which is too small to show they work equally well, and the anti-DHT rationale rests on laboratory work. For alopecia areata, telogen effluvium and seborrhoeic dermatitis there is no trial evidence for azelaic acid at all.

learn Omega 3

Can low omega-3 intake after a diet change weaken hair? There is no good evidence that low omega-3 intake causes hair loss or that adding omega-3 restores hair. If hair thinned after a diet change, ask a doctor to check for iron deficiency, low protein or calorie intake, or telogen effluvium.

learn Alopecia Areata

autoimmune disorder causing patchy hair loss

Clinics

1 / 2 results

Hair Systems
Telogen Salon and Hair Restoration CenterHoboken, NJ · US

Experts

1 / 5 results

SMP Specialist
Hairo Fallas
Newark, NJ, United States

Hairo Fallas