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Thioglycolic acid and L-cysteine change hair structure differently during perms, affecting hair strength and curling efficiency.

The industry should promote pure luxury hair fibers, improve technology, and diversify products to support growers and ensure sustainable use.

Curly and straight hair differ in how their internal fibers are arranged.

The study found that a polymer treatment changes the charge on hair surfaces, making bleached hair smoother and less porous.

Plasma jet treatments can clean hair and might replace peroxide for hair care.

Different tests are used to see how hair care products affect hair, and choosing the right test is important for accurate results.

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

Keratin from hair and wool is used in medical materials for healing and drug delivery.

Different oils affect hair flexibility and strength, with their impact varying on whether hair is virgin or bleached.

A new keratin, hK6irs1, is found in all layers of the hair follicle's inner root sheath.

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

Recombinant keratin K31 makes damaged hair thicker, stronger, and straighter.

Proteins like BSA and keratin can effectively style hair and protect it, offering eco-friendly alternatives to chemical products.

Hair strength is similar across different scalp areas, and not affected by age, gender, or hair thickness.

Human hair keratin can be used in many medical applications.

Alkylation of human hair keratin allows for adjustable drug release rates in hydrogels for medical use.

Dye enters hair at the edges of cuticle cells and penetrates more from water than alcohol-based solutions.

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

Keratin filaments' elasticity is influenced by their terminal domains and surrounding medium.

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Human hair was used to make biodegradable plastic films that could be useful for packaging and disposable products.

Repeated hair dyeing significantly damages hair.

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.

Juglone from walnut extracts may help repair damaged hair.

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

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

Different techniques measure hair properties to ensure cosmetic products work.

Eating a balanced diet with specific nutrients is important for menopausal women to manage hair loss.