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

Low-frequency electromagnetic fields help regenerate hair follicles using a mix of skin cells.

Repeated hair dyeing significantly damages hair.

A tough membrane between the outer and inner layers of human hair protects it from damage.

Asian hair is generally straight and thick, with unique disorders and properties, and more research is needed to understand it fully.

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.

Hair and wool strength is affected by the number and type of bonds in their protein structures, with hair having more protein aggregates than wool.

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

Different populations have distinct hair structures related to their ancestry.

Laser hair removal effectiveness depends on targeting hair structures without harming the skin, and improvements require more research and expert collaboration.

Advanced therapies like gene, cell, and tissue engineering show promise for hair regrowth in alopecia, but their safety and effectiveness need more verification.

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

Perming significantly changes hair's molecular structure, while shampoo and conditioner do not.

Eating well and avoiding synthetic hair products are key for healthy hair.

The document concludes that accurate diagnosis of hair disorders is crucial and requires a range of diagnostic methods.

The study found that variations in hair protein genes are likely due to evolutionary deletions or duplications.

Human hair is a significant sample for various tests in clinical, nutritional, archaeological, and forensic studies.

Lanceolate complexes in mouse hair follicles are essential for touch and depend on specific cells for maintenance and regeneration.

The document concludes that understanding hair follicles requires more research using computational methods and an integrative approach, considering the current limitations in hair treatment products.

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

The skin has multiple layers and cells, serves as a protective barrier, helps regulate temperature, enables sensation, affects appearance, and is involved in vitamin D synthesis.

Good nutrition may help prevent premature hair graying.

The article concludes that advancements in hair cosmetics require dermatologists to stay informed about products and their potential risks, including allergies and higher risks for hairdressers.

Understanding hair biology is key to developing better treatments for hair and scalp issues.

Permanent hair dyes use chemicals that react with hydrogen peroxide to create color.

Hair and nails are skin parts that develop early and serve protective and functional roles.

Cysteine-rich keratins evolved independently in mammals, reptiles, and birds for hard skin structures like hair, claws, and feathers.

Using polyethylenimine-DNA to deliver the hTERT gene can stimulate hair growth and may be useful in treating hair loss, but there could be potential cancer risks.

The research found that postmortem root bands in hair are likely caused by the breakdown of a specific part of the hair's inner structure after death.

Hair absorbs molecules differently based on their size, charge, and love for water, and less at higher pH; this can help make better hair products.