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Bleaching hair removes its protective top layer and exposes more hydrophilic groups, changing its chemical surface and affecting how it interacts with products.

Bleaching hair causes severe structural and chemical damage, including protein loss and oxidation.

Trichothiodystrophy involves brittle hair due to low sulfur amino acids, not a transport defect.

Chemical treatments like dyeing, perming, and bleaching damage hair by altering amino acids and lipids.

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

Chemical treatments and daily stresses damage hair, especially the cuticle layer.

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

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

Oxidation changes human hair by breaking down fats and forming new acidic groups, affecting how it interacts with conditioners and cosmetics.

Perming and bleaching damage hair differently, with bleached hair having more cysteic acid in the cuticle.

Swimming in pools with high copper can turn hair green, especially if hair is damaged.

Chemical treatments on bleached black hair change its internal structure by breaking and reforming bonds, and treatments with hydrolyzed eggwhite protein help repair it.

Monoethanolamine-based hair colorants can cause more damage to hair than ammonia-based ones.

Bleaching hair changes its structure and weakens it, which is important for understanding hair damage and creating treatments.

The new keratin film without KAPs stains better and could help study keratin functions.

Hair quality is genetically determined and linked to its composition and strength.

Metabolomics can identify hair damage markers, but its use in creating treatments is uncertain.

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

Heat and UV exposure damage hair structure by altering keratins.

Protein carbonylation is a sensitive marker for oxidative damage in hair, especially from light exposure.

After chemotherapy for early breast cancer, 33.4% of patients had long-term significant hair loss, with some hair regrowth over time, but treatments for hair loss were largely ineffective.

UV-A radiation significantly damages semi-permanent dyed hair.

Androgenic alopecia, a common hair loss condition, is linked to changes in androgen metabolism and genetics, and can be treated with finasteride and minoxidil, but these treatments are only fully effective in 10% of patients.

The treatment improved hair growth and reduced hair loss.

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

Congenital Adrenal Hyperplasia is a genetic disorder with two forms, causing symptoms like early puberty and severe acne, but can be identified through screening and treated with glucocorticoids.

Markers help differentiate between apocrine and eccrine sweat glands to identify sweat gland tumors.

Apocrine type cutaneous mixed tumors often resemble hair follicles, sebaceous glands, and apocrine glands.

Mutations in the hairless gene cause hair loss and skin cysts in rhesus macaques.

A gene mutation in mice causes permanent hair loss and skin issues.