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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.

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

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

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

Researchers found that the most reachable bonds in wool fibers are near the ends of certain proteins, which help stabilize the fiber's structure.

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

The molecular details of hair growth are not well understood.

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.

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

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.

The study found nine new hair protein genes in human hair follicles.

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

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

Hair keratins evolved from ancient proteins, diversifying through gene changes, crucial for forming claws and later hair in mammals.

Keratin structure changes during keratinization, but the exact model remains uncertain.

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.

Using natural polyphenol cross-linkers like tannic acid and green tea extract in perm treatments improves curling and protects hair.

Involucrin is crucial for skin cell maturation and protection.

Disulfide bonds are crucial for hair structure during keratinization.

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

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.

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

Keratin peptides can change hair shape gently without harsh chemicals.

Two mouse mutants have defective hair cuticle cross-linking.

L-arginine, hydrolysed keratin, and cystine-silanol copolymer can help protect hair from damage during and after bleaching.

Polymers help reduce damage and improve bleached hair when used during or after bleaching.