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Hair grows like a crystal at a solid-liquid interface without cell division.

This study found that pretreatment with KP-Cryst fusion proteins effectively protected Asian and Caucasian virgin hair from thermal damage by maintaining higher water content and preventing structural changes during heat application.

This study found that mu-crystallin gene expression in mouse skin is highest during the anagen phase of hair development, suggesting its possible role in hair follicle growth.

This study reports the crystallization of the human androgen receptor's ligand-binding domain with nonsteroidal ligands, which may aid in understanding the differences in binding compared to steroidal ligands.

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 investigated the effect of peracetic acid treatment on hair fiber structure and found that disulfide bond oxidation altered thermal properties while preserving the α-crystal structure, suggesting different stabilizing interactions in hair fibers.

This study found that oxidative treatment with peracetic acid dissociates some disulfide bonds in human hair fibers while maintaining the crystalline structure, suggesting different mechanisms stabilize different regions of intermediate filaments.

In this case report, a young woman experienced acute kidney injury linked to the use of a hair straightening product containing glyoxylic acid, suggesting dermal absorption may lead to calcium oxalate nephropathy; this highlights the need for regulatory review and public health intervention.

This article reports that cocaine injections can lead to skin lesions containing talc crystals at the sites of injection.

In this study, the authors identified and characterized the Get3d protein, conserved across plants and photosynthetic bacteria, which localizes to the chloroplast in Arabidopsis thaliana and potentially plays a role in tail-anchored protein targeting, linked to photosynthesis homeostasis.

This study found that, compared to oxidative treatments, reductive perm-waving more severely impacts the intermediate filaments in European human hair, while both treatments alter denaturation kinetics in a first-order manner.

This review discusses the history, structure, and biological significance of keratins, including the crystal structure of a keratin helical segment, without reporting new experimental results.

This study found that high levels of μ-crystallin in skeletal muscle are associated with greater fat metabolism and a shift in gene expression towards slower muscle function.

This study found that applying botanical extracts improved the mechanical properties of bleached hair, reducing its permeability and increasing its crystalline content.

This study uncovered how Staphylococcus hominis transports an odor precursor molecule, potentially leading to new ways to control body odor production in humans.

This study reports that a specific transporter protein in Staphylococcus hominis is responsible for transporting a malodour precursor, thereby playing a key role in human body odor production.

Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.

This study found that hair follicle tissue effectively induced mineral formation in calcium phosphate solutions, likely due to its nucleating ability, which was lost when the tissue was lyophilized and stored.

This model study describes how interactions between hair keratin and various materials alter hair's physical and mechanical properties by affecting noncovalent bonds.

This study found that citric acid treatment can significantly improve the structural integrity and mechanical properties of chemically treated hair, reducing damage by increasing keratin crosslinking density and decreasing crystallized calcium soaps, with varying effectiveness depending on the type of chemical treatment.

This study conducted a detailed examination of Terminalia arjuna flowers, suggesting their potential use in establishing botanical standards for identification and standardization in Ayurvedic medicine.

Keratin could help create enamel-regenerating toothpaste in a few years.

In this study, cricket-derived chitin successfully converted to nanochitin, which demonstrated improved physical properties such as higher transmittance and greater modulus compared to crab shell nanochitin.

This study utilized the DNP–SANS technique on human hair for the first time and found significant changes in the SANS profile dependent on polarization conditions, providing insights into the structural composition and dynamic properties of keratin and its associated proteins.

This study suggests that typical skin lesions in Carney complex may originate from the pro-melanogenic activity of a specific dermal fibroblast population influenced by PKA signaling.

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

Metabolic issues may trigger lymphocytic cicatricial alopecia, and treatments targeting these issues could help.

This study suggests that finasteride-loaded liquid crystalline nanoparticles could be a viable alternative to oral administration for treating androgenetic alopecia due to their controlled release and skin permeation properties.

This case study found that a 7-year-old girl's crystalline cataract had sulfur-containing amino acids likely cystine, and was associated with abnormal hair conditions.

This study investigated various proteins as eco-friendly hair perming agents for Asian hair and found that bovine serum albumin and keratin achieved perming results comparable to commercial products, while also increasing hair moisture, indicating a protective effect during heat styling.