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

Hair has unevenly distributed proteins and lipids, with lipids mainly in the cuticle and proteins in the cortex and medulla.

Melanin in black hair protects it from sun damage better than light-brown hair.

Cuticle damage doesn't affect hair's tensile strength; the cortex is responsible for it.

A rabbit gene important for hair development was identified and detailed.

Hair malformations may occur due to timing issues in hair development.

The study found that thioglycolic acid breaks down hair bonds more consistently than l-cysteine, which is less damaging to hair.

Human hair has different protein structures in its cuticle and cortex.

Hair follicle cells become four types: medulla, cortex, cuticle, and inner root sheath.

Human hair has more unsaturated fats inside than on the surface, and certain lipids may help bind the outer and inner layers together.

Antler velvet hair and body hair of red deer have different structures that help with protection and insulation.

OCT can identify hair structures, but chemical treatments can damage them.

Sunlight damages hair, causing cuticle loss, protein changes, and discoloration.

Hair in mammals likely evolved from glandular structures, not scales.

The cell membrane complex in mammalian hair has three distinct types with different structures and chemical properties.

Some mutant mice have hair with abnormal cross-linking, mainly in the cuticle, not affecting other hair parts.

Keratin 26 affects cashmere goat hair growth and is influenced by various treatments.

Heat damages hair, with Asian hair losing more protein than Caucasian hair.

Hydrolyzed wheat proteins penetrate all hair types effectively.

Melanin density affects hair color, and this method can help in cosmetic assessments and diagnosing hair diseases.

The cuticle significantly contributes to hair stiffness, making up about 60% of the total bending stress.

The conclusion is that substances can penetrate hair fibers through multiple pathways, including both the cell membrane complex and the non-keratinous parts.

Hair proteins change location and structure as hair cells mature.

The torsional method effectively evaluates hair damage and the performance of hair care ingredients.

The evolution of mammal body hair remains a mystery.

Lipids are crucial for healthy hair, protecting it from damage and breakage.

Bleaching hair increases cysteic acid levels in a predictable way.

Keratin 33A is a key protein in goat winter coats, especially in high-producing breeds.

Calcium soaps are present in human hair and can be removed with acid.

Silicone pretreatment protects hair from damage and reduces color fading without interfering with bleaching or dyeing.