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Hair and wool strength is affected by the number and type of bonds in their protein structures, with hair having more protein aggregates than wool.

Permanent wave treatment with thioglycolic acid changes hair structure by altering disulfide bonds.

Cysteines in wool fibers are accessible and form important disulfide bonds.

Thioglycolic acid and L-cysteine change hair structure differently during perms, affecting hair strength and curling efficiency.

Potassium cyanide treatment changes hair's disulfide bonds, making it more elastic.

Potassium cyanide changes hair's disulfide bonds to monosulfide, affecting high-sulfur proteins more.

Keratins K4 and K13 form stable dimers in mature esophageal cells, aiding cell stability.

Washing permed hair after using thioglycolic acid helps reform strong bonds, making hair stronger.

APA is a promising new compound for repairing damaged hair, outperforming Olaplex® in strength and elasticity.

Alkylation of human hair keratin allows for adjustable drug release rates in hydrogels for medical use.

Recombinant keratins can form useful structures for medical applications, overcoming natural keratin limitations.

Understanding how keratin structures in hair are arranged and interact is key for creating methods to extract and purify them.

Hair cuticles remain stable and resilient under stress due to strong protein content and crosslinking.

Disulfide bonds make keratin in hair stronger and tougher.

Infrared and Raman imaging can non-destructively analyze hair structure and help diagnose hair conditions.

Krtap11-1 is important for hair strength and structure.

Bleaching hair increases cysteic acid levels in a predictable way.

The hair cuticle is made of tough proteins that protect the hair, but more research is needed to fully understand its structure.

Wool keratin is reactive, biocompatible, biodegradable, and can model keratin from other sources.

Alkylated keratin from human hair can help deliver growth factors for bone healing.

PDI helps restore over-bleached hair's strength and structure by attaching special peptides.

Disulfide bonds are crucial for hair structure during keratinization.

Involucrin is crucial for skin cell maturation and protection.

Using enzymes to link proteins makes hair repair treatments more effective and long-lasting.

Human hair keratins can be turned into useful 3D biomedical scaffolds through a freeze-thaw process.

Hair's structure and properties change with pH; acidic pH maintains strength and less swelling, while alkaline pH increases water content and swelling.

Keratin peptides can change hair shape gently without harsh chemicals.

2-iminothiorane hydrochloride improves hair waving permanence without damage.

Changes in keratin make hair follicles stiffer.

The hydrogels are strong, self-healing, and good for 3D printing and delivering treatments.