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Glossary Scalp 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”

This study observed a microbial shift on the scalp of Alopecia areata patients, characterized by an increase in Propionibacterium acnes and a decrease in Staphylococcus epidermidis, compared to healthy controls.

research Scalp bacterial species influence SIRT1 and TERT expression in keratinocytes

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

In this study, predominant scalp bacteria, such as Cutibacterium acnes and Pseudomonas lini, were found to influence the expression of genes related to scalp and hair health in keratinocytes, potentially affecting scalp repair and hair 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”

This study found that applying Ayurvedic base oils and essential oils can effectively reduce the bacterial colony on the scalp, especially when matched to individual constitutional types.

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

January 2025 in “Annals of Dermatology”

This study reports that patients with primary cicatricial alopecia have distinct bacterial colonization and higher antibiotic resistance compared to those with non-inflammatory scalp conditions, indicating the importance of bacterial culture and susceptibility testing for targeted therapies.

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Community Join

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community Thoughts on Lactobacillus Reuteri 6475?

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

in Technology 54 upvotes 5 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?

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 Scalp Itching and Red Spots on Finasteride After 2 Years, Ketoconazole Not Helping

in General 171 upvotes 10 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.

community Scalp inflammation let’s talk about it?

in Chat 11 upvotes 1 year ago

Scalp inflammation can cause hair thinning and may be related to diet, infections, or conditions like psoriasis. Treatments suggested include using Nizoral shampoo and checking vitamin levels.

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