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PEI diffuses into hair at a constant rate, and urea speeds up this process.

Heat transfer in hair is slower in groups of hair, increasing the risk of damage from high-temperature styling tools.

Chemical treatments on bleached black hair change its internal structure by breaking and reforming bonds, and treatments with hydrolyzed eggwhite protein help repair it.

The protein Gnαs is found more in black mice than white mice and may influence their coat color.

16-MHA can restore the barrier and moisture of damaged hair, making it similar to undamaged hair.

Keratin-associated proteins have ancient origins and were used for different purposes before being adapted for hair in mammals.

The document concludes that understanding hair biology is key to treating hair disorders, with gene therapy showing potential as a future treatment.

Human skin can make serotonin and melatonin, which help protect and maintain it.

Stress can cause hair loss by negatively affecting hair follicles and this effect might be reversed with specific treatments.

Ozone reacts more with unwashed hair, producing compounds due to scalp oils, which could lower ozone exposure but increase exposure to reaction products.

Children with loose anagen hair have easily pluckable hair due to root sheath problems, and it might improve without treatment.

Androgenetic alopecia involves genetics, hormones, and can be treated with medications or surgery.

The 190-kbp domain contains all human type I hair keratin genes, showing their organization and evolution.

The study identified and characterized new keratin genes linked to hair follicles and epithelial tissues.

Caucasian women's hair appears thickest in their 20s, with perceived thinning after mid-30s due to both decreasing density and diameter.

Environmental factors at different levels control hair stem cell activity, which could lead to new hair growth and alopecia treatments.

The document concludes that understanding hair follicle cell cycles is crucial for hair growth and alopecia research, and recommends specific techniques and future research directions.

Menopause-related hormonal changes affect hair but are not the only cause of hair changes in middle-aged women.

Prolactin may affect hair growth differently based on gender and scalp area.

Most hair loss in children is caused by a few common conditions, and it's important to diagnose these properly and support the child's mental health.

Key genes regulate hair follicle phase changes in Inner Mongolia cashmere goats.

The document suggests using hairpieces, wigs, and safe cosmetic techniques to hide hair loss from alopecia areata.

Leucaena leucocephala is nutritious but needs careful processing to remove toxins.

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

People with Inflammatory Bowel Disease often lose hair due to stress, medication side effects, or lack of nutrients, and treatment depends on the specific cause.

The HOXC13 gene affects different hair proteins in cashmere goats in varied ways and is controlled by a feedback loop and other factors.

Keratin's mechanical properties are influenced by hydrogen bonds and secondary structure, and can be improved with the SPD-2 peptide.

Cynatine HNS improves hair and nail quality in 90 days.

Modern wound dressings like hydrocolloids, alginates, and hydrogels improve healing and are cost-effective.

Hair analysis can show nutritional status and environmental exposure, with phosphorus being very stable in hair and differences found based on gender and conditions like depression and autism.