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

The hair cuticle is made of tough proteins that protect the hair, but more research is needed to fully understand its structure.

The hair cuticle acts as a barrier against fungal infection, which occurs only deep within the hair follicle.

Hirosaki hairless rats have sparse, twisted hair due to missing hair keratin genes.

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.

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

Certain natural extracts can promote hair regrowth.

KRTAP10 proteins help form the hair shaft's tough outer layer by interacting with specific hair keratins.

Researchers found a non-functional sheep keratin gene due to mutations.

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

Scientists found out how a specific protein in human hair cuticles behaves and is structured.

The study found nine new hair protein genes in human hair follicles.

Glyoxylic acid straighteners cause more protein loss but have similar hair strength effects as traditional alkaline straighteners.

AFM helped show how hair changes under tension and the effects of damage and conditioner.

Nanotechnology improves hair care products by enhancing ingredient stability, targeting treatment, and reducing side effects, but more research on its toxicity is needed.

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

μ-Crystallin may help hair growth by affecting thyroid hormone levels in mouse hair follicles.

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

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

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

Hair from people with seborrheic dermatitis is thicker scaled, more damaged, and thinner than healthy hair, and atomic force microscopy can help monitor the condition.

Chemical and physical treatments like bleaching, dyeing, and UV radiation damage both Caucasian and Afro-ethnic hair.

The Cell Membrane Complex in hair has both water-attracting and water-repelling layers.

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

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