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Hair germ cells differ from epidermal cells in keratin expression, and specific keratins form after hair differentiation.

Scientists discovered a unique hair protein, KAP24.1, with a special structure, found only in the upper part of hair cuticles.

Human hair keratins were cataloged, showing their roles in hair differentiation stages.

K39 and K40 are the last keratins expressed in hair development, completing the hair keratin catalog.

Microsporum gypseum fungus breaks down keratin in hair by digesting it enzymatically, starting with less keratinized parts.

Piedraia hortae fungi dissolve both the outer and inner layers of hair.

Polarized Raman spectra can reveal changes in hair keratin's protein structures.

Human hair strength and health are linked to sulfur compounds that can be reduced by stress but improved with sulfur supplements.

The research found that people's hair proteins vary, especially by ethnicity and body part, which could help identify individuals in forensic science.

The research found that people's hair proteins vary by individual and body part, with some differences between ethnic groups, which could help in forensics.

K25, K27, and K28 are found in all inner root sheath layers of hair, while K26 is only in the cuticle.

Disrupting the Sox21 gene in mice causes hair loss and regrowth cycles.

Human hair has a new region with ordered filaments and the cuticle contains β-keratin sheets.

Hair's strength and flexibility come from its protein structure and molecular interactions.

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.

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

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

The research found that postmortem root bands in hair are likely caused by the breakdown of a specific part of the hair's inner structure after death.

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

The new antibody, TYHF-1, specifically targets certain hair-related structures.

Older thin hair is not just thinner but also has different shape, structure, and stiffness.

Small KP peptide improves hair without reducing agents, while larger proteins need them for better results.

Microfibrils are key for permanent waves, and hydrolyzed keratin improves wave formation and hair condition.

Loose anagen hair syndrome is caused by structural abnormalities in the hair follicle's inner root sheath.

Ultrasonic and infrared treatments can improve hair strength and appearance with minimal damage.

Hematin in shampoo helps repair and straighten damaged hair.

Mice with the naked gene have missing or abnormal hair cells.

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

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