research Incorporation of Isotopically Labeled Cocaine and Metabolites into Human Hair: Dose-Response Relationships
Hair analysis can detect cocaine use but doesn't accurately show the amount or timing of use.
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60-90 / 1000+ results research Nanomechanical Characterization of Human Hair Using Nanoindentation and SEM
Human hair's strength and flexibility vary by ethnicity, damage, and treatment.
research Correlation of Cortisol in 1-Cm Hair Segment with Salivary Cortisol in Humans: Hair Cortisol as an Endogenous Biomarker
Hair cortisol levels can reflect salivary cortisol levels in humans.
research In Vitro and In Vivo Study of Dye Diffusion into Human Skin and Hair Follicles
Dyes can penetrate human skin and hair follicles up to 1.2 mm deep and the sebaceous gland can store dye; Indocyanine Green lotion was made for safe dyeing and monitoring.
research Human Hair Shaft Proteomic Profiling: Individual Differences, Site Specificity, And Cuticle Analysis
Human hair proteins vary by individual, body site, and ethnicity, useful for forensics.
research Stability of Opiates in Hair Fibers After Exposure to Cosmetic Treatment
Cosmetic treatments like bleaching and perming can greatly reduce opiate levels in hair, possibly leading to false-negative drug tests.
research Influence of Pigmentation on the Codeine Content of Hair Fibers in Guinea Pigs
Darker hair in guinea pigs holds more codeine than lighter hair.
research Sources of Variation in Hair Cortisol in Wild and Captive Non-Human Primates
Hair cortisol levels in primates are useful for stress assessment but vary by age, sex, species, and hair collection methods.
research Exogen Hair Characterization in Human Scalp
The conclusion is that exogen is a unique hair cycle phase and the new sampling method specifically targets this stage, which may help in future hair loss research.
research Untargeted Scanning of Hair for Drugs of Abuse by Direct Analysis in Real Time–High-Resolution Mass Spectrometry
A new method can quickly and accurately detect drugs in hair.
research Human Hair Growth Ex Vivo Is Correlated With In Vivo Hair Growth: Selective Categorization of Hair Follicles for More Reliable Hair Follicle Organ Culture
Choosing hair follicles at the same growth stage leads to more consistent hair growth experiments.
research Microbiome in the Hair Follicle of Androgenetic Alopecia Patients
Hair loss patients have different microbes in hair follicles, possibly affecting hair loss.
research Degradation of Hair Surface: Importance of 18-MEA and Epicuticle
18-MEA and cationic surfactants can restore and maintain hair's hydrophobic nature, improving its beauty and feel.
research Light Microscopy of the Hair: A Simple Tool to Untangle Hair Disorders
Light microscopy is useful for diagnosing different hair disorders.
research Human Pollution Exposure Correlates With Accelerated Ultrastructural Degradation of Hair Fibers
Pollution exposure speeds up hair damage.
research Hair Analysis for Cannabinoids and Amphetamines in a Psychosis Incidence Study
Hair analysis for drugs in psychosis patients is unreliable due to varying hair growth rates.
research Different Localizations of Drugs Simultaneously Administered in a Strand of Hair by Micro-Segmental Analysis
Drugs localize differently in hair strands based on their properties.
research The Hair Shaft: Normality, Abnormality, and Genetics
Hair microscopy is useful for diagnosing hair disorders, but clear definitions are needed for accurate genetic analysis.
research Relative Studies Between Hair Index, Hair Area, And Medullary Index With Age And Sex In Thai Scalp Hair
Hair area varies with age and sex, but hair index and medullary index do not.
research Hair Sampling for Cortisol Analysis with Mother-Toddler Dyads Living in Low-Income Homes
Collecting hair for cortisol analysis is possible in low-income mother-toddler pairs.
research New Insights Into Human Hair: SAXS, SEM, TEM, and EDX for Alopecia Areata Investigations
Alopecia Areata causes significant structural and compositional changes in hair.
research Hair EtG: Alterations in Segment Levels Accompanying Hair Growth
EtG levels in hair decrease significantly after one month of alcohol abstinence.
research Twelve-Point Scale Grading System of Scanning Electron Microscopic Examination to Investigate Subtle Changes in Damaged Hair Surface
The 12-point scale is better for evaluating small changes in hair condition after using hair care products.
research The Vellus Index: A New Method of Assessing Hair Growth
The vellus index is a simple, quick, and reliable method to assess and monitor hair growth, especially in hirsutism.
research Hair Diameter Measurements for Planning Follicular Unit Extraction Surgery: Is There a Correlation Between the Micrometer Caliper and Scanning Electron Microscopy Findings?
The micrometer caliper is a reliable tool for measuring hair diameter for FUE surgery.
research Repair of Damaged Hair Protein Fiber by Jointly Using Transglutaminase and Keratin
Using an enzyme and keratin treatment can significantly repair and strengthen damaged hair.
research A Mutation in the Type II Hair Keratin KRT86 Gene in a Han Family with Monilethrix
A new mutation in the KRT86 gene was found to cause the hair disorder monilethrix in a Han family.
research Use of a Modified Hair Strand Test to Assess the Antifungal Activity Kinetics of Dog Hair After a 2% Climbazole Shampoo Application
A 2% climbazole shampoo effectively reduces fungal growth on dog hair, and using a physiological shampoo afterward may boost this effect.
research Non-Invasive Biomonitoring of Infant Exposure to Environmental Organic Pollutants in North-Western Spain Based on Hair Analysis: Identification of Potential Sources
Hair analysis shows infants and mothers in north-western Spain are exposed to environmental pollutants, with factors like diet and residence affecting pollutant levels.
research Longitudinal Association Between Saliva and Hair Cortisol Concentration: A Systematic Comparison
Hair cortisol is a reliable marker of long-term cortisol levels and is linked to daytime saliva cortisol but not morning levels.