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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.

A new method was created to measure metformin in hair, showing potential for monitoring treatment and medical investigations.

Drugs can be incorporated into hair based on their chemical properties and hair pigmentation.

Hair root sheaths can be used to accurately analyze genetic markers.

Sonication washing reduces nuclei in hair roots, affecting DNA extraction.

Hair testing can detect a single GHB exposure, useful for documenting sexual assault.

Shrunken heads retain some facial features and hair characteristics, allowing for limited individual identification.

Hair testing is crucial for forensic science and public health.

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.

Hair analysis can somewhat track past testosterone levels but is influenced by factors like hair washing, growth rate, sex, and hair color.

Hair mineral analysis might help diagnose diseases early, but standard methods are needed.

Hair transplantation research is growing, needing more interdisciplinary studies and tech advancements.

Hair properties change under electromagnetic fields and are influenced by individual characteristics and the environment.

Hair histology helps identify animal species in forensic investigations.

Hair analysis can reveal metabolic changes and potential pregnancy complications.

Hair is a complex organ, and understanding its detailed structure and growth phases is crucial for analyzing substances within it.

Sappan wood hair tonic helps protect and repair damaged hair.

Early treatment of Female Pattern Hair Loss is important to stop it from getting worse, and various treatments can help, especially in mild to moderate cases.

Human hair can be used to study mineral changes from long-term space flight.

Lipids in Japanese hair help maintain glossiness and structure.

The new method reliably identifies and measures different animal hair fibers in textiles.

Chronic stress increased after lockdown, especially in young adults and females.

The mummified girl likely died from undernourishment and illness.

Overall alcohol consumption decreased during lockdown, but heavy drinkers consumed more.

Animal hair from 18th-century Mazamet burial sites shows locals used goat, badger, cow, or horse fur for clothing, indicating modest economic status.

Homemade hair treatments can significantly lower drug levels in hair, possibly causing false-negative drug tests.

Clozapine levels in hair reflect dosage and bind more to pigmented hair.

Darker hair in guinea pigs holds more codeine than lighter hair.

Wait 4-5 weeks after drug use before hair testing and cut hair into three segments to confirm single drug exposure.

Minoxidil can make it hard to detect cocaine in hair tests.