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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.

Some chemicals can permanently or temporarily remove color from skin and hair, which can be distressing and is not well-regulated in cosmetics.

Hair dyes can change hair color temporarily or permanently but may cause side effects like skin reactions and hair damage.

Eating disorders can cause various hair problems, and while hair loss in these disorders is linked to metabolic syndrome, treatment focuses on specific medications and lifestyle changes for the syndrome.

Human alpha defensin 5 helps heal wounds, reduce bacteria, and grow hair on burned skin.

Inflammation plays a key role in activating skin stem cells for hair growth and wound healing, but more research is needed to understand how it directs cell behavior.

Using the right hair care products can improve hair health and help manage hair disorders.

Different countries have regulations to ensure the safety of hair care products, with some recalling hair straighteners due to high formaldehyde.

Sunflower oil was found to promote hair growth in mice with hormone-induced hair loss.

Doctors often miss Hair Tourniquet Syndrome, which can lead to serious damage if not treated quickly.

Bleaching and combing damage hair's surface and mechanical properties.

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

NaOH treatment improves hair strength and suitability for textiles.

Keratin proteins are consistent across different hair types from the same person.

Aspartic acid at 0.75% makes perms more effective and less damaging to hair.

Bleaching hair changes its structure and weakens it, which is important for understanding hair damage and creating treatments.

Hair dyes vary in how long they last and how deeply they penetrate hair.

Environmental factors can greatly reduce drug levels in hair.

Cationic and nonionic surfactants provide better color intensity and resistance for semi-permanent hair dye than anionic surfactants.

Polydopamine is a safe, effective, and permanent hair dye that turns gray hair black in one hour.

Repeated dyeing and shampooing cause hair color loss and damage.

Fermented grapeseed oil effectively repairs and protects chemically damaged hair.

Henna orange powder, especially with alkali, protects and colors hair better than oxidizing colorants.

Amino acids in conditioners improve hair strength, hydration, and color retention.

Bleaching hair causes severe structural and chemical damage, including protein loss and oxidation.

Homemade hair treatments can significantly lower drug levels in hair, possibly causing false-negative drug tests.

Certain ingredients in personal care products, like formaldehyde, oxidative hair dyes, and sulfates, pose health risks and need careful review.

A hair tightly wrapped around a toddler's toe caused severe crying and was treated by surgery.

Hirsutism greatly impacts women's mental well-being and finances.

Shampoo pH can affect hair health, with alkaline shampoos potentially causing damage and acidic shampoos reducing frizz.