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

Bacterial communities on scalp hair are unique to each person but consistent across different scalp sites.

Laser-capture microdissection effectively analyzes hair follicle microbiomes, revealing region-specific bacterial differences.

People with severe hair loss (Alopecia Areata) have different scalp bacteria than healthy people, which might help predict the condition's progress.

The scalp has more diverse bacteria, while hair has more bacteria and unique types.

Hair loss patients have different microbes in hair follicles, possibly affecting hair loss.

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

Certain bacteria and fungi are linked to healthy scalps and dandruff, suggesting that the scalp's microbial balance affects its health.

Human hair shafts inhibit Gram-positive bacteria growth but not Gram-negative bacteria.

Human hair contains diverse proteins, including keratins and histones, which could help assess hair health and aging.

Biotin supplements may improve hair and nail growth in people with certain deficiencies or conditions, but there's not enough evidence to recommend it for healthy individuals.

Avoid harmful shampoo chemicals and use scalp treatments with micronutrients for better hair health.