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Alopecia areata, a type of hair loss, may be passed through T cells and has genetic links, while treatments vary in effectiveness. Male pattern baldness can be treated with finasteride and is influenced by androgens in hair follicles.

More dermal papilla cells in hair follicles lead to larger, healthier hair, while fewer cells cause hair thinning and loss.

Trichohyalin is a protein in hair follicles that helps form hair filaments.

The conclusion is that small hair follicles cause baldness in macaques, and treatments like antiandrogens and minoxidil can prevent hair loss and promote regrowth.

Red deer only have androgen receptors in neck hair cells for mane growth during breeding season.

KY19382 helps to regrow hair and create new hair follicles.

Scientists made working hair follicles using stem cells, helping future hair loss treatments.

Beard and scalp hair cells have different gene expressions, which may affect beard growth characteristics.

Pig ear skin is better than human skin for testing how well barrier creams block allergens from entering hair follicles.

Activin A is important for creating new hair follicles.

Some hair protein genes evolved early and were adapted for use in hair follicles.

Injecting a special gel with human protein particles can help hair grow.

Androgen receptor signaling causes early aging of cells important for hair growth by damaging their DNA.

Bioengineering can potentially treat hair loss by regenerating hair follicles and cloning hair, but the process is complex and needs more research.

Abnormal contraction of connective tissue in hair follicles causes hair loss by killing off important cells, and treating this could improve hair growth.

Urticadioica L extract may enhance human hair growth.

Protease Nexin-1 is found in human hair growth cells and is affected by male hormones.

Dermal sheath cells can help grow new hair follicles and show promise in treating hair loss.

Capsaicin, found in chili peppers, can slow down hair growth by affecting skin cells and hair follicles.

Researchers developed a new method to deliver molecules to hair follicles to manage hair growth without damaging surrounding skin.

Blackcurrant extract may help reduce hair loss by promoting stem cell activity in hair follicles.

Estrogens generally inhibit hair growth and improve skin quality, but their exact effects on hair follicles are complex and not fully understood.

A new mutation in the Hr gene causes hair loss in mice, similar to a human hair disorder.

Hair follicle stem cells reduced hair loss and inflammation in mice with a condition similar to human alopecia.

Insulin or IGF-I is needed for hair growth in newborn mice, while minoxidil helps adult mouse hair grow, suggesting a way to study human hair loss.

Asiasari radix extract promotes hair growth and increases protein synthesis and cell proliferation.

Certain 4-azasteroids are effective at blocking the enzyme that processes testosterone in human skin and could help treat acne, excessive hair growth, and male pattern baldness.

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 document concludes that while "hair follicle cloning" shows promise for unlimited donor hair, it faces challenges with consistency and safety in humans.

Disrupted citric acid metabolism stops hair growth.