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research Internal structure changes in bleached black human hair resulting from chemical treatments: A Raman spectroscopic investigation
Chemical treatments on bleached black hair change its internal structure by breaking and reforming bonds, and treatments with hydrolyzed eggwhite protein help repair it.
research Keratins: the hair shaft's backbone revealed
Keratins are crucial for hair strength, and mutations in certain keratin genes cause hair disorders.
research Effect of oil application, age, diet, and pigmentation on the tensile strength and breaking point of hair
Children's hair is more elastic, but tensile strength is similar across different factors.
research Insights on the mechanical behavior of keratin fibrils
Keratin's mechanical properties are influenced by hydrogen bonds and secondary structure, and can be improved with the SPD-2 peptide.
research Analysis of slenderizing human hair fibers surface morphology
research The effect of treatments on the shear modulus of human hair measured by the single fiber torsion pendulum.
Different treatments change the strength and flexibility of human hair.
research Changes in the mechanical properties of human hair under various conditions
Hair coloring and chlorine change hair strength differently.
research TENSILE STRENGTH OF SCALP HAIR IN WOMEN WITH HAIR LOSS
Women with hair loss have weaker hair that breaks more easily.
research <b>Direct Observation of Hair Components Involved in Formation of Permanent Waves</b>
Microfibrils are key for permanent waves, and hydrolyzed keratin improves wave formation and hair condition.
research Pulling force deforms hair follicle root sheath nuclei and surrounding dermal collagen matrix differently at infundibulum, isthmus and suprabulbar regions
Hair follicles respond differently to pulling forces in various regions.
research Some electron microscope observations on hardening in the human hair follicle
The hair follicle structure is more complex than thought, with new findings on protein formation.
research Human hair keratin responds to oxidative stress via reactive sulfur and supersulfides
Human hair strength and health are linked to sulfur compounds that can be reduced by stress but improved with sulfur supplements.
research Human hair keratin-associated proteins: Sequence regularities and structural implications
Keratin-associated proteins help link filaments and affect keratin's strength.
research X-rays studies of the structure of hair, wool, and related fibres. II. - The molecular structure and elastic properties of hair keratin
Stretched hair has a similar structure to natural silk, showing hair's elasticity involves reversible changes within its molecules.
research Analysis of structural change in keratin fibers resulting from chemical treatments using Raman spectroscopy
Chemical hair straightening changes hair proteins and mostly fixes broken bonds.
research Strain and Strain Recovery of Human Hair from the Nano- to the Macroscale
Human hair can almost fully recover its structure within about 1,000 minutes after being stretched.
research Proteomic tools for the investigation of human hair structural proteins and evidence of weakness sites on hair keratin coil segments
Hair proteins have weak spots in their α-helical segments.
research Ultrastructural visualization of cross-linked protein features in epidermal appendages
Cross-linked proteins help maintain the structure of hair, feathers, and hagfish teeth.
research Isolation of intermediate filament assemblies from human hair follicles.
Researchers isolated and identified structural components of human hair follicles, providing a model for studying hair formation.
research Water distribution in human hair microstructure elucidated by spin contrast variation small-angle neutron scattering
The technique showed that human hair has two main parts, with 68% being rigid and the rest flexible, and water swelling affects its structure.
research Nucleation and growth of macrofibrils in trichocyte (hard-α) keratins
Sheet formation is key to macrofibril structure differences in wool.
research Effect of Disulfide Bonds in Human Hair Fibers on the Melting Behavior of Their Crystalline Structure
Changing disulfide bonds in human hair affects its melting behavior and thermal stability.
research Crosslinking structure of keratin. V. Number and type of crosslinks in microstructures of untreated and potassium cyanide treated human hair
Potassium cyanide treatment changes hair's disulfide bonds, making it more elastic.
research Cyclic combing of untreated and bleached human hair: Analysis of the time‐dependent breakage of hair through recording the formation of fibre fragments
Friction causes hair breakage during combing, and fragment count predicts hair strength.
research Preparation of human hair keratin/calcium alginate blend films
More human hair protein makes the films weaker and less clear.
research Impact of acid (”progressive brush”) and alkaline straightening on the hair fiber: Differential effects on the cuticle and cortex properties
Glyoxylic acid straighteners cause more protein loss but have similar hair strength effects as traditional alkaline straighteners.
research Molecular elements of the regulatory control of keratin filament modulator AHF/trichohyalin in the hair follicle
The study concluded that a protein important for hair strength is regulated by certain molecular processes and is affected by growth phases.
research P-13 Some biomechanical properties of human hair keratin (HHK) artificial tendon
research Effect of disulfide bonds in human hair fibers on the melting behavior of their crystalline structure
Disulfide bonds affect the melting behavior of hair's crystalline structure, but hair retains some stability even after these bonds are broken.