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Human beard hair medulla contains a unique and complex mix of keratins not found in other human tissues.

Human hair contains diverse proteins, including keratins and histones, which could help assess hair health and aging.

A hair-straightening product caused widespread hair loss and scalp injuries, mainly affecting African American women.

Hair loss can lead to significant stigma and lower quality of life, especially for women and those with certain types of alopecia.

Most people in the surveyed area experience hair loss, but they are not aware of the role of diet, iron, hormones, genetics, and possibly water quality in causing it.

Chemical treatments severely damage hair cuticles, especially in previously treated hair.

Lipids are important for healthy hair, but their exact role is not fully understood and needs more research.

Cells treated with Wnt-10b can grow hair after being transplanted into mice.

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

Hair's resistance to wear varies by ethnicity and treatment, with less wear indicating stronger hair.

Using both TGA and DTDG in hair straightening reduces hair damage compared to using TGA alone.

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

Hair quality is genetically determined and linked to its composition and strength.

Hair can't be reliably repaired once damaged; prevention and proper product use are key to maintaining hair health.

Hair growth serums reduce hair fall and improve growth with mostly positive reviews.

Cosmetic procedures can harm hair, but damage can be minimized with knowledge and care; however, once hair is damaged, it cannot be reliably repaired.

The conclusion is that we need more effective hair loss treatments than the current ones, and these could include new drugs, gene and stem cell therapy, hormones, and scalp cooling, but they all need thorough safety testing.

Hair properties are interconnected; a comprehensive, cross-disciplinary approach is essential for understanding hair behavior.

Water and fatty acids affect hair's surface differently based on hair damage, and models can help understand hair-cosmetic interactions.

Minoxidil helps hair regrowth in alopecia patients, with 16 having good results and no side effects.

Stem cells can rejuvenate skin, restore hair, and aid in wound healing.

Shampoos have evolved into multifunctional products with patented innovations for different hair needs and can include medicinal herbs for hair and scalp health.

Mutations in the PADI3 gene are linked to a higher risk of scarring hair loss in women of African descent.

Some drugs can cause hair loss, and stopping these drugs often leads to hair regrowth.

Lack or blocking of SRD5a, a key component in hormone creation, can lead to conditions like pseudohermaphrodism and affect hair growth, bone mass, muscle strength, and reproductive health. More research is needed on its regulation from fertilization to adulthood.

The new topical botanical formulation significantly regrew hair in all five patients without side effects.

Nanotube-based hair treatments could improve hair health and growth, and offer long-lasting effects.

Men have more tryptophan in their hair than women, and it increases with age and is higher in darker and grey or white hair.

Arabica coffee pulp extract may help prevent hair loss and promote hair growth.

Body hairs can be used in forensic science and toxicology like scalp hair.