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GlossaryScalp Bacteria

diverse microorganisms naturally residing on human scalp

Scalp bacteria refer to the diverse community of microorganisms that naturally reside on the human scalp. These bacteria play a crucial role in maintaining scalp health by balancing the skin's microbiome, preventing the overgrowth of harmful pathogens, and contributing to the overall condition of the hair and scalp. An imbalance in these bacteria can lead to issues such as dandruff, seborrheic dermatitis, or other scalp disorders.

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Research

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research Scalp bacterial shift in Alopecia areata

48 citations , April 2019 in “PloS one”

Alopecia areata patients have more Propionibacterium acnes and less Staphylococcus epidermidis on their scalps.

research Scalp bacterial species influence SIRT1 and TERT expression in keratinocytes

4 citations , September 2023 in “Bioscience Biotechnology and Biochemistry”

Scalp bacteria affect genes linked to hair health and growth.

research A Study of the Efficacy to Control the Bacteria Colony of Scalp in Ayurvedic Oils on Clinical Testing

January 2009 in “Fashion business”

Ayurvedic oils effectively reduce scalp bacteria and improve hair health.

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”

Unhealthy lifestyle habits may worsen hair loss by affecting scalp bacteria.

research Scalp Bacterial Profile and Antibiotics Susceptibility Pattern in Patients With Primary Cicatricial Alopecia

January 2025 in “Annals of Dermatology”

PCA patients have more harmful bacteria and antibiotic resistance, needing specific testing for treatment.

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Community Join

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community Thoughts on Lactobacillus Reuteri 6475?

in Treatment 3 upvotes 1 year ago

Lactobacillus reuteri 6475 is being used by a person who reports healthier hair after one month, despite initial shedding. The discussion includes speculation about its effects on gut bacteria and scalp inflammation.

community Pattern hair loss could be due to gut bacteria

52 upvotes 6 years ago

Feeding bacteria-free mice with Lactobacillus murinus worsened hair loss, but a regular diet with biotin stopped it. The conversation suggests gut bacteria and diet may influence hair loss, with some skepticism and discussion about other factors like DHT and genetics.

community Scalp Inflammation Beyond Psoriasis: A Hidden Player in Hair Thinning

in Technology 54 upvotes 3 months ago

Scalp inflammation may contribute to hair thinning, with treatments like ketoconazole shampoo potentially helping by reducing inflammation. Some users report that DHT blockers and other treatments like finasteride, minoxidil, and RU58841 can alleviate symptoms associated with inflammation.

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

in Treatment 2 upvotes 4 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 Scalp Itching and Red Spots on Finasteride After 2 Years, Ketoconazole Not Helping

in General 171 upvotes 8 months ago

The user has been experiencing severe scalp itching and red spots after using finasteride for two years, suspecting possible allergies or a fungal infection. Despite trying ketoconazole shampoo and stopping saw palmetto supplements, the symptoms persist, leading to increased hair loss.

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