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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.

Human hair varies widely and should be classified by curl type rather than race.

Keratin structure in hair is stable at pH 5-6 but disrupts between pH 6-7.

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

A teenager's hair with alternating white and dark bands, known as Pili annulati, is a genetic condition that is usually harmless and often considered attractive.

Curly wool has more orthocortex than straight wool.

Different techniques measure hair properties to ensure cosmetic products work.

Mitochondria change shape to meet energy needs during cell movement.

Actin filaments help stabilize and integrate cell membranes during transfer.

A gene in Arabidopsis thaliana, AtPRPL1, affects root hair length but not cell wall composition.

Environmental and cosmetic factors, including heat, chemicals, and sun exposure, can cause hair loss and damage.

Outside factors like grooming, chemicals, and the environment can damage hair and cause disorders.

Water-soluble wool keratin can protect human hair from damage during treatments.

Permed hair degrades faster and shows more damage after protease treatment compared to untreated hair.

Root hair growth mechanics depend on turgor pressure and cell wall properties.

Root hair stiffness is mainly influenced by tip compression and turgor pressure.

Onion and Aloe vera can help protect hair from damage caused by hair dyes.

Repeated use of protein hair conditioner with heat or gamma irradiation can harm skin and hair health in rats.

CMADK reduces hair damage from bleaching and permanent waving.

Human hair's structure makes it tough and resistant to breaking.

Fibroblast and immune cell interactions affect tissue repair and fibrosis.

The document concludes that skin stem cells are important for hair growth and wound healing, and could be used in regenerative medicine.

Hair follicle growth and development are controlled by specific genes and molecular signals.

Dermatologists need to understand hair products to treat hair and scalp issues better.

The document concludes that hair is complex, with a detailed growth cycle, structure, and clinical importance, affecting various scientific and medical fields.

Hair elemental analysis could be useful for health and exposure assessment but requires more standardization and research.

Sunlight worsens hair loss; protect scalp.

The article explains the genetic causes and symptoms of various hair disorders and highlights the need for more research to find treatments.

Hair growth is controlled by specific gene clusters and proteins, and cysteine affects hair gene expression in sheep.

Keratin peptides can change hair shape gently without harsh chemicals.