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Glossary scalp microbiome

community of microorganisms living naturally on the scalp

The scalp microbiome refers to the community of microorganisms, including bacteria, fungi, and viruses, that naturally live on the scalp. These microorganisms play a crucial role in maintaining scalp health by balancing the skin's ecosystem, protecting against harmful pathogens, and potentially influencing conditions like dandruff and seborrheic dermatitis.

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Research

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research Association Between Scalp Microbiota Imbalance, Disease Severity, and Systemic Inflammatory Markers in Alopecia Areata

4 citations , October 2024 in “Dermatology and Therapy”

In this study, researchers observed that alterations in scalp microbiota might be linked to inflammation associated with alopecia areata, but it's unclear if these microbiota changes cause or result from hair loss, necessitating further investigation into their causal relationship and mechanisms.

Scalp Bacterial Microbiota Dysbiosis in Androgenetic Alopecia: Community Structure, Functional Profiles, and Associations with Lifestyle Factors

research Scalp Bacterial Microbiota Dysbiosis in Androgenetic Alopecia: Community Structure, Functional Profiles, and Associations with Lifestyle Factors

June 2026 in “medRxiv”

This study found that patients with androgenetic alopecia showed distinct scalp bacterial imbalances compared to healthy individuals, which were associated with unhealthy lifestyles. These microbial changes might contribute to follicular inflammation, potentially accelerating hair loss in these patients.

research 84 Partial restoration of scalp microbiota in alopecia areata with JAK inhibitors

November 2023 in “Journal of Investigative Dermatology”

In this study, patients with alopecia areata displayed altered scalp microbiota compared to healthy controls, and treatment with JAK kinase inhibitors largely restored these microbial changes, providing insights into the potential role of the skin microbiome in alopecia areata.

research Effect of two shampoo formulations on the prokaryotic and eukaryotic microbiota composition of the human scalp

September 2023 in “International Journal of Cosmetic Science”

The researchers observed that two non-antimicrobial shampoos caused a significant increase in fungal germs but did not affect the overall scalp microbiota diversity over two weeks, suggesting these formulations may preserve or stimulate the scalp microbiota without adverse effects.

research Scalp Microbiota Dysbiosis in Seborrheic Alopecia and Restoration Following Herbal Extract Shampoo Intervention

May 2026 in “Microorganisms”

This study found that individuals with seborrheic alopecia had significant disruptions in their scalp microbiome, marked by imbalances in certain bacteria and fungi, and that a 12-week herbal shampoo intervention helped restore microbial diversity and improve clinical symptoms.

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Community Join

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community Gut microbiome imbalances linked to scalp inflammation and hair follicle impact

in Technology 243 upvotes 3 months ago

Gut microbiome imbalances can cause scalp inflammation and affect hair follicles, potentially leading to hair loss. Treatments include finasteride, peptides like BPC-157, TB-500, KPV, and lifestyle changes such as diet and exercise.

community DHT Harms Scalp Microbiome: DHT Itch is REAL

413 upvotes 1 year ago

Increased Malassezia and Cutibacterium in the scalp microbiome are linked to higher sebum production and inflammation in androgenetic alopecia (AGA). Treatments include ciclopirox shampoo, benzoyl peroxide shampoo, clobetasol propionate, calcipotriol, minoxidil, finasteride, and dutasteride.

community Study: There is 70x Higher Unconjugated DHT in Feces Compared To Blood Levels in Young Adults - Gut Microbiota Manages DHT Recycling and Metabolism

in Research/Science 194 upvotes 1 year ago

Gut microbiota significantly influences androgen metabolism, impacting hair loss treatments like finasteride. Probiotics, dietary changes, and fecal microbiota transplants may help manage DHT levels and improve hair health.

community Scalp inflammation cleared after stopping "spoiled" milk - what about follicles,shedding?

4 upvotes 6 months ago

Switching milk brands cleared scalp inflammation and other symptoms, but hair shedding continues. The user hopes shedding will stop as hair cycles progress.

community Finasteride completely stopped itching on my scalp

in Finasteride/Dutasteride 27 upvotes 1 year ago

Finasteride stopped scalp itching and improved hair health, likely due to reduced DHT. Users discussed the relationship between DHT, itching, and hair loss, with some mentioning minoxidil and antifungal treatments like ketoconazole.

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