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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.

This study found that bacterial community structures on hair and scalp differ significantly, with distinct abundances of Pseudomonas on hair and Staphylococcus on scalp.

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.

This study observed significant differences in the skin microbiome between hidradenitis suppurativa patients and healthy individuals, notably with decreased β-diversity and a distinct abundance of certain bacteria in affected skin.

This review discusses the relationship between skin microbiome changes and conditions such as ageing and skin disease, emphasizing the need for further research, but reports no new findings.

This study found that sensitive scalp is characterized by increased pH levels, redness, altered sebum composition, and a disrupted microbiome, suggesting these features could inform treatment approaches.

This study reviewed current scientific evidence on how scalp microbiome alterations may affect hair growth, citing connections to inflammatory and immune processes and suggesting potential for therapeutic targeting, though further studies are needed to confirm clinical applications.

In this research, geography was found to explain more variation in the human skin microbiome than skin type, while host genetics contributed unique microbial structures, highlighting their role in skin microbiome ecology through extensive genomic and metagenomic analyses in a diverse international cohort.

This study found that administering dupilumab to patients with moderate-to-severe atopic dermatitis over 12 weeks altered both fungal and bacterial skin microbiomes, increasing microbial diversity and decreasing colonization by Malassezia and Staphylococcus aureus at lesion sites.

Changes in scalp bacteria are linked to female hair loss, suggesting new treatment options.

In this study, researchers observed that individuals with alopecia areata exhibited significant changes in scalp microbiota diversity and composition, which were linked to disease severity and inflammation markers, though it remains unclear if these microbial shifts are a cause or a result of hair loss.

In this study, researchers isolated and identified diverse endophytes from plants in Asia, finding that these microorganisms have significant potential for producing useful metabolites, including enzymes and antibiotics.

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.

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.

In this study involving acne patients, researchers compared the effects of combined fire needle and salicylic acid therapy with conventional treatment, measuring improvements in skin lesion severity, skin barrier function, and microbiota diversity; results are not reported in the abstract.

This study found that the RpoN/RpoS pathway regulates gene expression in Borrelia burgdorferi, influencing its ability to persist in mammals and adapt to different hosts.

This study observed that dandruff in Indian women is associated with a distinct scalp microbiome, including specific bacterial and unknown Malassezia species, with implications for nutrient homeostasis and cell-host adhesion pathways.

This study found that microneedling treatment improved hair regeneration in an animal model of alopecia areata and positively influenced the gut microbiome by restoring microbial diversity and altering short-chain fatty acid levels.

This study found that individuals with androgenetic alopecia had higher scalp microbiome diversity and more complex scalp-gut microbiome networks than those without, suggesting a link between skin-gut microorganisms and hair loss development.

This study found that disruptions in the skin microbiome, known as dysbiosis, play a significant role in various skin conditions, including atopic dermatitis, psoriasis, acne, rosacea, skin cancer, and impaired wound healing, by altering immune responses and barrier functions.

Gut microbiota influences the development of alopecia areata.

This review discusses the mechanisms of skin barrier impairment in acne vulgaris and suggests strategies for its repair but reports no new clinical results.

This review reports that thermal spring waters, enriched with a diverse hydrobiome, hold promising potential for use in dermocosmetics, as their bioactive compounds could enhance skin protection, repair, and appearance, benefiting conditions like atopic dermatitis and rosacea.

In this study, PA-011, a traditional Chinese medicine extract, was shown to improve hair growth in alopecia areata model mice by reducing skin inflammation and altering skin microbiota, indicating its potential therapeutic role for this condition.

This study investigated the effects of heat-treated Limosilactobacillus fermentum LM1020 on hair growth and reported increased hair density, improved cellular activity, and beneficial scalp microbiota changes in patients with androgenetic alopecia over 24 weeks.

This study found that treatment with the synbiotic SIM01 significantly alleviated multiple symptoms of post-acute COVID-19 syndrome compared to placebo, suggesting potential management benefits through gut microbiome modulation.

In this study, adding disinfected feathers to the diet of captive Arctic foxes increased gut bacterial species diversity without changing overall abundance, potentially influencing immune response and physiological performance.

This study found that in people with leprosy sequelae, ulcers on the lower limbs exhibited decreased microbial diversity and reduced abundance of specific bacteria compared to normal skin, with skin metabolites closely linked to these microbial changes.

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.

In this study on diabetic wound healing in mice, Calvatia gigantea extract accelerated wound recovery, reduced inflammation, and improved the microbiome's diversity, particularly enhancing Escherichia–Shigella bacteria presence.