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This study observed that key signaling events controlling hair growth in ferret follicles occur between 0 and 4 days after melatonin implantation, highlighting distinct processes in follicular regeneration and fibre growth.

This study found that a blend of low- and high-molecular weight hyaluronic acid significantly improved penetration into the hair cortex compared to individual HA types, reducing frizz and increasing hair elasticity and water content, as measured by Confocal Raman Spectroscopy.

In this study, heritability analyses in twins and siblings revealed that genetic factors predominantly influence hair diameter and curvature, with notable sex differences in their genetic impact.

This study found that rhodamine B penetrated human hair fibers more effectively from an aqueous solution compared to a methanol/ethanol solvent, with penetration depending on hair morphology.

Animal hair fibers like wool and mohair are strong when dry, but vicuna fibers are very brittle.

In this study, combined treatment with transglutaminase and keratin significantly repaired damaged hair by improving its structural properties, reducing swelling, and enhancing crosslink activities, as evidenced by microscopy and spectroscopy analyses.

This study tested five different brands of hair building fibers, examining their electrostatic and dielectric properties as well as analyzing their fiber structure with scanning electron microscopy.

This microscopy study examined the non-keratinous regions of human hair fibers, revealing detailed morphology that could help understand how external influences affect hair structure.

This study identified 2574 differentially expressed genes in the hair follicles of Wan strain Angora rabbits, suggesting that these genes may influence wool fiber diameter and quality.

This study highlights that dyeing and other processing methods can impact the identification of animal species from hair fibers using an amino acid sequence analysis technique.

This study found that codeine incorporation in guinea pig hair varied with pigmentation and was highest in black hair, suggesting the role of eumelanins in drug binding.

Pollution exposure speeds up hair damage.

This study explored the genetic basis of fiber diameter in alpacas, identifying candidate genomic regions including four significant areas on VPA6, VPA9, VPA29, and an unassigned scaffold, using whole genome association analysis and a custom SNP microarray.

This study demonstrated that incorporating human hair fiber into soft clayey soil significantly enhances subgrade strength and reduces cracking compared to unreinforced soil, as confirmed by unconfined compressive strength and CBR tests.

This study found that oxidative hair dyes altered the color and ultrastructure of Caucasian hair but did not significantly affect the hair's breaking strength.

This study found that combining a 1,927 nm fractional Thulium-doped fiber laser with platelet-rich plasma significantly increased hair density and mass in men with androgenetic alopecia, suggesting it is an effective treatment.

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

This study investigates calcium and phosphorus accumulations in the hair of mummies from the Taklamakan desert and debates their exogenous or endogenous origin.

This study found that women with AIDS had significantly reduced epithelial thickness and more telogen hair follicles on the scalp compared to women without AIDS.

This study examined the age-related changes in the dermal structure of goat skin, providing baseline data on its histomorphology, histochemistry, and histoenzymology.

Keratin fibers in hair twist left-handed.

This ex vivo study reported that melatonin significantly improved certain aging biomarkers in aged human skin, including reduced mTORC1 activity, increased fibrillin-1, and enhanced collagen and elastic fiber organization, though other key biomarkers remained unchanged.

This study conclusively demonstrated that in Merino fetuses, secondary follicle initiation is completed several weeks before birth, with a peak 16 days prior and lower levels observed at and after birth.

In this study, researchers conducting a genome-wide association study on 263 adult female goats identified significant genomic variants linked to coarse hair diameter, particularly emphasizing a crucial region on Chromosome 10. These findings enhance understanding of the genetic factors influencing fiber diameter in goats.

This study used quantitative methods to identify new geometric and mechanical parameters of curly and kinky/coily hair, aiming to improve classification and develop better personal care products for these hair types.

This study found that in Chinese Alashan Left Banner White Cashmere goats, guard hair length was positively correlated with guard hair diameter and down fiber length, but not with body weight at first combing.

This study systematically characterized the nanomechanical properties of human hair, such as hardness and elastic modulus, across different ethnicities and treatment conditions using nanoindentation and scanning electron microscopy.

This study found that exposure to artificial sunlight led to variable changes in ethyl glucuronide levels in hair, with both increases and decreases observed depending on hair characteristics.

This study indicates that sheep prenatally androgenized with testosterone show wool fiber diameter changes that parallel the increased hair diameter in women with polycystic ovary syndrome.

This study examined wool traits in Angora rabbits using low-coverage whole genome sequencing, identifying six QTLs and a gene, FGF10, linked to fiber growth and diameter, suggesting a cost-effective approach for complex trait analysis in genomic breeding.