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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.

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

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.

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

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.

Bleaching hair increases cysteic acid levels in a predictable way.

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.

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

A gentler, less damaging method for curling hair using tyrosine works well initially but fades after washing.

Natural polymers can protect, repair, and promote hair regrowth.

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.

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

Permanent waving weakens hair by altering its protein structure.

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

2-iminothiorane hydrochloride improves hair waving permanence without damage.

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

Disulfide bonds in keratin fibers break more easily under stress, especially when wet, affecting fiber strength.

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

Hair's internal fibers are arranged in a pattern that doesn't let much water in, and treatments like oils and heat change how much water hair can absorb.