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Hair can't be as strong as Rapunzel's because it's impractical to scale up due to defects.

This study suggests that the exercise-induced cytokine IL-15 can improve wound healing in aged skin, along with previously reported benefits on skin structure and mitochondrial function.

This study found that the internal structure and fracture patterns of hair vary among different mammal species, which could inform the development of keratin-based biomaterials for medical and cosmetic applications.

This study found that the acidic hair straightening formulation at pH 1.0 improved hair alignments and straightening effectiveness more than pH 2.0, but it weakened fiber strength and affected hair color and composition.

This study found that in vitro, EGCG may help treat colorectal cancer by targeting iron chelation and the ER stress pathway, leading to apoptosis in cancer cells while sparing normal cells.

This study found that anisotropic osmolyte solutions may improve hair follicle turnover and condition in both in vitro and in silico models, as well as in human volunteers with hair disorders.

In this study, occasional attendance at religious services among adolescents was associated with lower hair cortisol levels, indicating lower chronic physiological stress, compared to regular attendance or none at all.

This study identified a novel mechanism by which dsRNA-induced TLR3 activation and retinoic acid pathways contribute to new hair follicle formation after deep wounds in mice and suggested a similar potential in humans.

Ceramide may help delay hair aging by restoring stressed hair cells.

This study found that polyamines participate in DNA double-strand break repair, primarily by enhancing the homologous recombination pathway through RAD51-mediated DNA strand exchange.

This study suggests a connection between the unfolded protein response and upregulation of NKG2D ligands in stressed hair follicles, highlighting a potential role of PRDX5 in alopecia areata pathogenesis.

This study found that down-regulation of sonic hedgehog gene expression is a critical early event in chemotherapy-induced tissue damage in hair and feather follicles.

This study suggests that using vitamin A, vitamin E, and vitamin C for two months may enable a reduction in corticosteroid dosage for alopecia areata, potentially mitigating associated side effects.

This study found that neonatal administration of Allopregnanolone may mitigate some behavioral effects of early maternal separation in adolescence, but also lead to similar adverse effects as the separation in adulthood.

Gray hair is caused by oxidative stress damaging hair cells.

This study identified mefloquine as a potent inducer of lethal ER stress that effectively eliminated vemurafenib-resistant and sensitive melanoma cells, suggesting its potential for repurposing as a melanoma treatment.

This study suggests that targeting the tumor stroma to promote the formation of dermal condensates may offer a novel approach to treating basal cell carcinoma.

In this study, significant changes in hair fiber dimensions were observed between pre- and post-operative states in males undergoing abdominal surgery, with values normalizing by the fourth post-operative week.

This review examines the science and technology behind temporary and permanent hair straightening, discussing the processes, potential advancements, and considerations for reducing adverse effects, but does not report new research findings.

This study found that areola formation in mice requires a combination of pregnancy hormones and mechanical strain, with individual stimuli causing only modest changes in epidermal proliferation and connective tissue remodeling.

This chapter reviews the skin's structure and its clinical relevance, highlighting connective tissue diseases and the potential for novel treatments like protein, cell, or stem cell transfer, but reports no new findings.

This study found that hair cortisol concentrations in mother-daughter pairs are a potential biomarker for cortisol responses to chronic stress, with daughter-mother similarities affected by parenting styles and children's symptoms.

This case study reports that a 61-year-old woman with high testosterone levels due to stromal luteoma of the left ovary experienced rapid normalization of testosterone levels after surgical removal of the tumor.

This study observed that Platycarya strobilacea S. et Z. extract enhanced hair growth and improved hair follicle length and immune response in mice compared to control groups.

This review discusses the chemical processes involved in hair styling and straightening and reports no new results; the authors highlight pregnancy safety with hair treatments during pregnancy.

This study found that rabbit skin histology revealed changes in collagen and elastic fibers after soaking, dehairing, and tanning processes, impacting fiber tightness and fur removal.

This study determined the crystal structure and conformation of synthesized 17x-Acetoxy-pregn-4,6-diene-3,20-dione, revealing specific molecular interactions and structural details in an orthorhombic crystal system.

This study established an experimental model to visualize calcium ion distribution after skin barrier damage in canine epidermis, observing that calcium gradients changed differently depending on the type of damage and time elapsed.

Hair straightening methods have advanced to improve effectiveness and reduce damage, but still rely on heat and chemicals.