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Human hair has bipolar electrical charges because of a gap in the hair follicle's electromagnetic field.

Hair testing is a reliable method for detecting workplace drug use when done with proper sample preparation and confirmation.

Hair analysis can detect cocaine use but doesn't accurately show the amount or timing of use.

Researchers created a mouse cell line to study hair growth and test hair growth drugs.

Hair analysis is better than urine and blood for detecting past drug use.

Both a lock of hair and a single hair strand can show chronic drug use, but at least six single hairs are needed for accurate results.

The HairMeasure device is a cheap way to measure Hair Mass Index and find scalp areas for hair exams.

Zolpidem shows up in hair from the top back of the head after one dose and fades over time, suggesting it gets into hair through blood and sweat.

Detecting steroid esters in cattle hair is inconsistent and influenced by sampling factors.

Researchers created a reliable method to detect hair-growth substances in products.

Trichoscopy is useful for detecting and monitoring androgenetic alopecia.

Hair cortisol levels can show increased stress during late pregnancy but only for up to six months.

Forensic hair analysis for drugs is now more reliable and accurate.

Hair follicles can regrow in wounded adult mouse skin using a process like embryo development.

Future hair loss treatments should aim to extend hair growth, reactivate resting follicles, reverse shrinkage, and possibly create new follicles, with gene therapy showing promise.

Hair elemental analysis could be useful for health and exposure assessment but requires more standardization and research.

Hair color loss can indicate the effectiveness of a drug targeting the KIT protein in mice and humans.

Dermal papilla cells help wounds heal better and can potentially grow new hair.

Improving the environment and cell interactions is key for creating human hair in the lab.

Somatostatin may help protect hair follicles from immune attacks.

Endoglin is crucial for proper hair growth cycles and stem cell activation in mice.

Pollution exposure speeds up hair damage.

Hair dyes can change hair color temporarily or permanently but may cause side effects like skin reactions and hair damage.

Bioluminescence imaging can track hair follicle cells and help study hair regrowth.

A new painless method to collect hair follicles helps study DNA damage and aging.

A new method accurately measures steroid hormones in a few hair strands and could help study chronic stress and hair loss.

EtG levels in hair decrease significantly after one month of alcohol abstinence.

Hair cortisol and cortisone levels may affect how work stress influences depression in Chinese fishermen.

Taking vitamins, minerals, and amino acids can improve hair strength and quality in people with Monilethrix.

Mouse hair follicle stem cells lose their ability to change into different cell types after being grown for a long time.