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

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

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

Changing disulfide bonds in human hair affects its melting behavior and thermal stability.

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

Thiol/disulfide balance is normal in male AGA patients but shifts towards oxidative stress with emotional stress and low vitamin D.

Selenium sulfide shampoo doesn't affect hair growth or rest phases.

Using Selenium Disulfide shampoo weekly helps prevent scalp dermatitis flare-ups.

Selenium disulfide shampoo effectively reduces dandruff and improves scalp health for all hair types.

Increased oxidative stress and decreased antioxidants contribute to hair loss in androgenetic alopecia.

Using selenium disulfide on guinea pigs increased hair loss.

Selenium disulphide detergents increase hair oiliness by boosting some lipids and reducing fatty acids.

Women with telogen effluvium have an imbalance in thiol-disulphide, suggesting oxidative stress may contribute to hair loss.

Disulfide bonds make keratin in hair stronger and tougher.

S100A3 protein is mainly found in specific parts of human hair cells.

Krtap11-1 is important for hair strength and structure.

Hair is hard to dissolve because of its complex proteins, but certain solvents that break specific bonds and hydrate can do it.

Sunlight exposure ages hair, making it brittle, stiff, and dry.

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

The 3D structure of a key hair protein was modeled, revealing specific helical structures and stabilization features.

UV exposure damages hair, increasing thiols and altering protein structure.

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

Hair coloring increases copper and calcium uptake, damaging hair and reducing shine.

L-phenylalanine and hydrolyzed eggwhite protein deeply penetrate human hair.

Thioglycolic acid mainly affects the unordered areas in hair structure.

Stretching damages Caucasian hair's structure more easily than Asian hair.

Modified pep7, named EPM peptide, effectively promotes hair growth at low concentrations and works well with minoxidil.

Cuttlefish ink melanin protects hair from UV damage.

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

The molecular details of hair growth are not well understood.