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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.

Cosmetic residues on individual hairs can be identified and differentiated using ATR FT-IR microspectroscopy.

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.

A new method can quickly and accurately detect drugs in hair.

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

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

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

The conclusion is that recognizing hair growth cycles can improve the precision of dietary and health assessments from hair analysis.

Hair analysis for drugs needs a better understanding of how drugs enter hair, considering factors like hair structure and pigmentation.

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

The KEBOT system is a highly accurate AI tool for analyzing hair transplants.

The new automatic tool accurately measures hair thickness and is reliable.

Hair analysis for stress and reproductive hormones in wildlife needs more research for accuracy across species.

Pollution exposure speeds up hair damage.

Human hair shows promise for non-invasive medical testing, but more research is needed to standardize its use.

Trichoscopic features can help dermatologists distinguish between female pattern hair loss and chronic telogen effluvium.

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

A new tool can analyze hair to detect changes due to hormones, genetics, and aging.

AFM can diagnose hair disorders by revealing detailed hair surface changes.

PIXE is an effective method to analyze hair's elemental composition.

A new method was developed to extract and analyze proteins from very short human hairs.

Chemical hair straightening significantly reduces detectable drug levels in hair.

Human head hair proteins can be typed into eight distinct patterns, useful for genetic and forensic investigations.

Hair properties are interconnected; a comprehensive, cross-disciplinary approach is essential for understanding hair behavior.

The study developed a method to analyze ancient hair proteins using very small samples.

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

Minoxidil 5% works better than 2% for hair growth in male-patterned hair loss.

Beard hair transplantation is generally satisfying, requires 250-800 grafts, uses FUE to avoid scars, needs careful planning, has some risks, and hair regrowth starts after 4-6 months.

Certain molecules in hair change with age and could be used for cosmetic treatments.

The document concludes that hair loss is influenced by genetics and other factors, and while treatments like finasteride can help, they have limitations and side effects.