Geometric Classification of Scalp Hair for Valid Drug Testing, More Reliable Than Hair Curl Groups
June 2017
in “
PLoS ONE
”
Research cited in this study
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research Dermal Papilla Cell Number Specifies Hair Size, Shape, and Cycling, and Its Reduction Causes Follicular Decline
More dermal papilla cells in hair follicles lead to larger, healthier hair, while fewer cells cause hair thinning and loss.
research Keratins and Lipids in Ethnic Hair
African hair's keratin structure is influenced by its higher lipid content.
research Curly Hair: Measured Differences and Contributions to Breakage
Curly hair breaks more easily, especially with chemical treatments, but simpler grooming reduces breakage.
research The Physical Properties of Hair Fibers
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research Hair as a Retrospective Calendar of Cortisol Production—Increased Cortisol Incorporation into Hair in the Third Trimester of Pregnancy
Hair cortisol levels can show increased stress during late pregnancy but only for up to six months.
research Hair as a Retrospective Calendar of Cortisol Production – Increased Cortisol Incorporation into Hair in the Third Trimester of Pregnancy
Hair can show increased cortisol levels during late pregnancy.
research Measurement of Cortisol in Human Hair as a Biomarker of Systemic Exposure
Hair cortisol can be used to measure long-term stress exposure.
research Worldwide Diversity of Hair Curliness: A New Method of Assessment
A new method accurately classifies hair types, showing global hair diversity.
research Shape Variability and Classification of Human Hair: A Worldwide Approach
Human hair can be classified into eight types based on physical features, not ethnicity.
research Human Hair Form: Morphology Revealed by Light and Scanning Electron Microscopy and Computer-Aided Three-Dimensional Reconstruction
Hair follicle shape determines hair type: curly, straight, or in-between.
research Glycation of Hair Protein in the Assessment of Long-Term Control of Blood Glucose
Hair glycation levels can indicate long-term blood sugar control.