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Research

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research Location and fine structure of melanocytes in human fetal scalp hair follicles.

March 2009 in “Chinese Journal of Dermatology”

This study observed that melanocytes in the outer root sheath of fetal scalp hair follicles may act as stem cells, showing rapid proliferation but immature function and morphology in culture.

research Sample collecting methods for bacterial community structure analysis of scalp hair: non-invasive swabbing versus intrusive hair shaft cutting

1 citations , September 2024 in “Scientific Reports”

This study observed that bacterial communities on scalp hair collected through non-invasive swabbing showed similar diversity and composition to those obtained by cutting or removing hair, suggesting that swabbing is an effective method for microbiome analysis on hair.

research Distribution of bacterial community structures on human scalp hair shaft in relation to scalp sites

September 2023 in “Bioscience, biotechnology, and biochemistry”

In this study, researchers observed that bacterial community structures on human scalp hair are unique to individuals and show consistent patterns across different sampling sites on the scalp, without significant variation between these sites.

research Hair care practices and structural evaluation of scalp and hair shaft parameters in African American and Caucasian women

25 citations , August 2015 in “Journal of cosmetic dermatology”

This study observed significant differences in hair care practices and biologic hair parameters between Caucasian and African American women, which may contribute to varying hair fragility and growth.

research Dose-Dependent Histopathological and Structural Impact of Chemical Hair-Straighteners on Scalp Epithelium and Hair-Fibres Using Albino Wistar Rats

September 2025 in “Sahel Journal of Life Sciences FUDMA”

This study reported that albino Wistar rats exposed to chemical hair straighteners showed significant hair fiber damage and scalp skin deterioration, which worsened with repeated and prolonged application, highlighting the cytotoxic potential of these products and potential systemic risks.

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Learn

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learn Scalp Micropigmentation

scalp tattoos to mimic the appearance of light stubble

How much does scalp micropigmentation cost? Scalp micropigmentation typically costs between $1,000 and $5,000 depending on individual needs.
Does scalp micropigmentation cause hair loss? Providers say scalp micropigmentation does not cause hair loss; there is little published evidence either way. SMP does not treat or stop hair loss, and a skin reaction or infection after SMP should be seen by a doctor.
What is Scalp Micropigmentation and how does it help people with visible hair loss? Scalp Micropigmentation creates the illusion of hair follicles on the scalp for visible hair loss.

learn Verteporfin

Light-activated eye drug being studied for scarring

learn Hair Fibers

cosmetic product that temporarily makes hair appear thicker

Are hair fibers safe for sensitive scalps or people with dandruff and irritation? No study has tested hair fibers on sensitive or dandruff-prone scalps. Users are advised to wash them out daily, try a small area first, and stop if irritation appears.

learn Botox

Can relaxing your scalp with Botox help reverse hair loss? Botox for hair loss is off-label and experimental: small uncontrolled studies report hair-count gains, but there is no placebo-controlled trial, and the proposed blood-flow mechanism has not been measured. All botulinum toxin products carry an FDA boxed warning about spread of the toxin effect.

learn Hair Transplant

Surgery that moves hair follicles from the back of the scalp to thinning areas

learn Hair Multiplication

extract, clone, and reinsert your own hair cells

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Community Join

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community Scalp testosterone does NOT cause hair loss, what is this baseless claim ?

in Research/Science 13 upvotes 6 months ago

DHT, not testosterone, causes hair loss. Treatments like finasteride, dutasteride, and RU58841 target DHT to manage hair loss.

community Dutasteride thins eyebrows and facial hair but doesn't stop scalp loss.

in Finasteride/Dutasteride 37 upvotes 1 year ago

Dutasteride may not effectively stop scalp hair loss and can cause thinning of facial and body hair, including eyebrows. Users suggest considering other causes like autoimmune conditions or vitamin deficiencies and exploring treatments like finasteride or minoxidil.

community Sometimes, the problem is the hair structure…

in Progress Pictures 165 upvotes 2 years ago

A 24-year-old shared his hair loss journey, using finasteride and topical minoxidil for 6 months with positive results and no side effects. He recommends growing hair out and getting a good haircut to improve appearance and confidence.

community The Real Reason For Hair Loss?

9 months ago

Hair loss is linked to scalp fibrosis and tension, which result from chronic mechanical stress and androgenic signaling. Treatments include blocking androgens with finasteride, promoting hair growth with topical minoxidil, and improving scalp mobility through exercises.

community Hair Loss Inflammation Prevention Stack

48 upvotes 1 year ago

The conversation discusses a hair loss and scalp care routine involving ciclopirox shampoo, benzoyl peroxide, clindamycin gel, clobetasol propionate, and calcipotriol to manage seborrheic dermatitis, folliculitis, and inflammation. It also touches on the role of diet and other treatments like oral minoxidil and pioglitazone for scalp health.

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Clinics

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Experts

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Trichologist
Kirsten J. Scalp
Greenville, SC, United States

Kirsten J. Scalp