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Human hair is unique and important for understanding human evolution and identity.

Hair aging is inevitable, but using the right hair care products can help maintain hair health.

Hair diameter and curvature are mostly determined by genetics.

The research provides a gene-based framework for hair biology, highlighting the Hippo pathway's importance and suggesting links between hair disorders, cancer pathways, and the immune system.

Hair loss may signal metabolic problems and increased risk of heart disease, suggesting people with hair loss should be checked for these issues.

The study found that hair transplant complications are rare, with swelling being the most common issue.

Hair chemicals don't cause SLE but may increase skin issues in those with SLE.

Appropriate zinc levels may help prevent hair loss in university students.

Pilocarpin can cause hair regrowth and color change in some cases but not in others, and it may have side effects in animals.

Stress-related substance P may lead to hair loss and negatively affect hair growth.

Over one-third of women experience hair loss, with female-pattern hair loss being most common, and treatments include minoxidil and possibly hair transplantation.

The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.

Researchers found that hair shedding happens mostly when new hair is growing and involves a unique process.

Eating the right nutrients can improve hair health, but taking extra supplements usually doesn't help unless you have a deficiency.

Hair elemental analysis could be useful for health and exposure assessment but requires more standardization and research.

Prolactin affects hair growth cycles and can cause early hair follicle regression.

Female Pattern Hair Loss affects women's self-esteem and needs more research for better treatment.

Japanese women typically start experiencing hair loss after 40, with reduced hair density and thickness being the main factors.

Some African American women's central scalp hair loss is linked to genetics and past fungal scalp infections, with more research needed on other causes.

Hair color loss can indicate the effectiveness of a drug targeting the KIT protein in mice and humans.

Prolactin affects when mice shed and grow hair.

Hair growth can be induced by certain cells found at the base of hair follicles, and these cells may also influence hair development and regeneration.

The document concludes that for hair and feather growth, it's better to target the environment around stem cells than the cells themselves.

Human hair follicle cells can grow hair when put into mouse skin if they stay in contact with mouse cells.

Hair growth is influenced by interactions between skin layers, growth factors, and hormones, but the exact mechanisms are not fully understood.

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.

Certain hairstyles and less hair oil use in African American girls can lead to scalp conditions like traction alopecia and seborrheic dermatitis.

Melatonin and mitotane treatment led to hair re-growth in 62% of dogs with Alopecia X, but this was not always linked to normal hormone levels.

Tooth papilla cells can help regenerate hair follicles and grow hair.