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This study validated a new tool for assessing curly hair manageability, finding that hair curvature is a key factor influencing hair practices and product attitudes among women with natural curly hair.

This study found that 53% of Japanese women have straight hair while 47% have varying degrees of curved hair, with distinct structural differences observed in the internal makeup of curved hair fibers.

Curly and straight hair differ in how their internal fibers are arranged.

This study found that hair luster decreases with age in Japanese females, primarily due to an irregular increase in fiber curvature which affects hair alignment.

This article describes specific cases of body hair transplantation using long hair grafts, reporting that this technique may produce natural results by considering hair characteristics, curvature management, and strategic placement.

This case report described a rare instance of new curly hair growth in a patient undergoing isotretinoin treatment for acne vulgaris, highlighting the potential for isotretinoin to alter hair fiber curvature.

This study found that PRP injections may safely improve penile curvature and PDQ scores in men with stable-phase Peyronie's Disease, although the curvature reduction observed was not enough to determine long-term clinical significance.

This study found that PRP injections are safe and may slightly reduce penile curvature and improve PDQ scores in men with stable-phase Peyronie's Disease, but the changes are not significant enough to predict long-term effects.

This study introduced a new high-throughput method for analyzing scalp hair morphology and found that quantifying hair form provides more accurate information than traditional classification based on racial categories, challenging the belief that cross-sectional morphology predicts hair curvature.

This study identified differentially expressed mRNAs and lncRNAs in Hu sheep hair follicles, suggesting certain genes and pathways are involved in the development of wool curvature patterns.

This study of African-American women found that those perceiving greater hair breakage showed lower break stress and higher premature failure rates, linked to grooming practices and hair curvature.

In this study, researchers found that the keratin-associated protein 36-1 gene (KRTAP36-1) allele C is linked to variations in mean fibre curvature of fine wool in Chinese Tan lambs, suggesting its role in their distinctive curly coat.

This study evaluated the effect of intralesional injections of lyophilized Platelet Derived Growth Factors in 42 patients with Peyronie's disease and found significant reductions in penile curvature and plaque size, along with improvements in Peyronie's Disease Questionnaire scores, suggesting a potential treatment role.

In this research, the author hypothesizes that curly hair is influenced by the contraction of the Arrector Pili muscle, suggesting that its relaxation through specific treatments could potentially modulate hair follicle curvature, but further studies are needed to confirm this mechanism.

This study analyzed the genetic variations of the KAP20-1 gene in Chinese Tan sheep lambs and found that the G variant was linked to an increased mean fibre curvature in their fine wool fibres, potentially influencing breeding strategies for this wool trait.

In this study, researchers identified a three-step process underlying age-related curved hair from cyclical extension: surface lipid transfer, specific disulfide bond cleavage, and unraveling of α-helices into β-structures, which may inform care strategies to manage hair curvature.

This study found that improved protein extraction methods enhanced the resolution of hair proteins on gels, but differences in protein abundance between curly and straight Japanese women’s hair were minimal and unlikely to affect hair structure.

This study found that oxidative damage is present in the mitochondria of PolG mice, which exhibit premature aging-like phenotypes due to mitochondrial dysfunction.

This study found that in Merino-Southdown cross sheep, the presence of the C variant of the KRTAP26-1 gene was associated with higher wool quality, including increased wool yield and staple length.

This study demonstrated the potential of a methodology combining ToF-SIMS and AFM to effectively analyze human hair structure and identify cosmetic residues, which can aid the cosmetic industry in product development.

This study evaluated the therapeutic response of an Afro-descendant patient with non-scarring alopecia after prolonged use of alkaline straighteners and mechanical traction, highlighting the susceptibility of Afro hair to chemical and mechanical damage due to its structure.

This study found that unilateral topical latanoprost use for glaucoma was associated with hypertrichosis and increased pigmentation of eyelashes in the treated eye compared to the untreated eye.

This study concluded that the curliness of human hair, regardless of ethnicity, originates from the inhomogeneous internal nanostructure due to differences in the distribution of two types of cortices.

This study identified several candidate genes related to wool production traits and adaptation to hot, arid environments in Iranian sheep, highlighting potential targets for future inbreeding programs.

Hair shape is determined by genetic, molecular, and cellular factors.

This study found that human mesenchymal stem cells overexpressing JAM-A improved hair follicle structure and hair formation in mice by reducing abnormalities such as curved and zigzagged follicles.

This article discusses surgical treatments for male pattern hair loss in black individuals, emphasizing the need for technique adjustments due to specific characteristics of black skin and hair, but reports no new clinical results.

This review discusses the efficacy and safety of oral finasteride for treating male pattern baldness and the potential persistent side effects, but no new results are reported.

This study found that the primary mechanism behind hair relaxation in Afro-hair is the alkali-induced denaturation of helical filaments, leading to spontaneous straightening.

This study found super-contraction in the guard hairs of fur-bearing animals, likely due to oxidation in living animals, primarily affecting white and red foxes without prior heat or chemical treatment.