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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.

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

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.

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

African hair has the most lipids, while Caucasian hair is more hydrated and stronger.

Topical therapies show promise for hair loss and acne treatment with minimal side effects.

Understanding how keratin structures in hair are arranged and interact is key for creating methods to extract and purify them.

Keratinized wool cells still have some organelles like lysosomes and mitochondria.

A new method using poly(ethylene imine) improves hair dyeing at lower temperatures with better color retention.

Repeated dyeing and shampooing cause hair color loss and damage.

Oxidative hair dye changes hair color and structure but doesn't weaken it.

Frequent hairdryer use may worsen hair fragility in people with Pili Annulati.

X-ray microscopy can non-invasively show hair structure changes after treatments, but it's less detailed than TEM and needs improvement.

Hair is a complex organ, and understanding its detailed structure and growth phases is crucial for analyzing substances within it.

Beautiful hair is flexible and elastic due to its unique double-layered structure and can be enhanced with succinic acid treatment.

Heating human hair creates hollow microtubes with smooth surfaces.

The study found that certain conditioning compounds can penetrate hair and potentially improve its resistance to damage.

The document explains how hair is studied in forensics to identify its source and its role in criminal investigations.

Hair analysis can detect drug use but is costly and interpretation is complex.

Understanding hair follicle development can help improve cashmere quality.

Human hair can almost fully recover its structure within about 1,000 minutes after being stretched.

Hair care products mainly work on the hair's surface and need professional guidance for use.

Trichothiodystrophy hair is structurally abnormal with protein and organization issues.

The research found that twisting hair fibers can show changes in stiffness and damage, and help tell apart different hair treatments.

Hair fibers degrade and change color in very basic water.

Sunlight and chemical treatments change hair's internal structure differently, needing specific care.

Neonate scalp hair is thinner, lacks a medulla, and has smaller follicles compared to adult hair.

Hair straightening changes hair structure and can cause damage if done wrong, but improvements in the methods are expected to continue.