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Researchers found genes for cysteine-rich proteins that form the protective layer of hair in humans and sheep.

Deleting the Sox21 gene changes hair lipid composition and increases cholesterol sulfate levels.

Researchers developed a new method to clearly see and label hair proteins with minimal errors using advanced freezing and microscopy techniques.

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

Hair grows from living roots, is made of dead keratin, and goes through growth, rest, and shedding stages.

Hair cuticles remain stable and resilient under stress due to strong protein content and crosslinking.

Hair properties vary with age and ethnic origin.

AP collagen peptides improve hair elasticity and gloss.

Human hair proteins vary by individual, body site, and ethnicity, useful for forensics.

HOXC13 is essential for hair and nail development by regulating Foxn1.

Mice with too much Claudin-6 have skin barrier problems and abnormal hair growth.

Trichocyte filaments have a low-density core and may include proteins for hair structure.

Environmental factors can greatly reduce drug levels in hair.

Marine mammals lost many α-keratin genes, aiding their adaptation to aquatic life by becoming hairless.

Hair keratin proteins can be reliably identified in hair as short as 0.12 cm, with 0.5 to 2 cm being the best length for analysis.

Melatonin treatment increases a specific RNA in goat cells that boosts cashmere growth.

Hair's internal fibers are arranged in a pattern that doesn't let much water in, and treatments like oils and heat change how much water hair can absorb.

Heating hair proteins changes their structure and may improve their blood clotting ability.

Scientists found 53 keratin genes in yaks that are important for hair growth and share similarities with those in other animals.

The study identified key genes and pathways that influence goat wool quality and growth.

The research identified proteins that change as goat hair follicles begin to form, helping to understand how cashmere grows.

Type I collagen, elastin, keratin, ceramides, and melanin improve hair strength, growth, and health.

Heat worsens damage in chemically treated hair, especially bleached and straightened hair.

Certain long non-coding RNAs in cashmere goats affect hair growth when treated with a specific growth factor.

Human hair's strength and flexibility vary by ethnicity, damage, and treatment.

Hair thinning and loss in a girl with a rare metabolic disorder was linked to her condition.

Hair and nail proteins, mainly keratins, are crucial for structure and can indicate health issues.

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

Holes in mature hair are likely caused by the removal of substances during hair care.

UV radiation significantly damages hair, especially with humidity, making it more vulnerable to further damage.