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TTD hair is brittle due to fewer sulfur amino acids and unstable disulfide bonds.

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.

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

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

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.

The molecular details of hair growth are not well understood.

Animal hair can curl tightly on its own, especially in foxes, due to changes in keratin.

Hydrophobic modifications make human hair less affected by water.

Enzymes xylanase and pectinase clean wool and specialty hair fibers effectively without damage, offering an eco-friendly alternative to soap and hot water.

The Cell Membrane Complex in hair has both water-attracting and water-repelling layers.

Oxidizing agents break down keratin in wool and hair, causing swelling and increased solubility.

Cuttlefish ink melanin protects hair from UV damage.

Oxidized trichocyte keratin has a helical dislocation in its structure.

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

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

Disulfide bonds make keratin in hair stronger and tougher.

Krtap11-1 is important for hair strength and structure.

The effectiveness of reducing agents on hair fibers depends on their electrode potentials.

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

Keratin-associated proteins help link filaments and affect keratin's strength.

Hidradenitis Suppurativa has genetic links, with certain gene mutations more common in patients and a third of cases having a family history.

Astrotactin proteins are important for brain and skin development and are linked to several neurodevelopmental disorders.

Cross-linked proteins help maintain the structure of hair, feathers, and hagfish teeth.

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

Disulfide bonds affect the melting behavior of hair's crystalline structure, but hair retains some stability even after these bonds are broken.

Disrupted cysteine metabolism may cause hair breakage in Alopecia Areata, suggesting potential treatments like N-acetylcysteine.

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

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