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Androgens like testosterone affect hair growth and oil production differently across body parts and individuals.

The document explains hair growth and shedding, factors affecting it, and methods to evaluate hair loss, emphasizing the importance of skin biopsy for diagnosis.

People with late-stage HIV-1 often experience a specific type of hair loss linked to multiple factors, including nutritional issues and immune responses.

Scientists found cells in hair that are key for growth and color.

Genetic mutations can cause hair growth disorders by affecting key genes and signaling pathways.

Nanotechnology improves hair care products by enhancing ingredient stability, targeting treatment, and reducing side effects, but more research on its toxicity is needed.

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.

MicroRNAs play a crucial role in skin and hair health, affecting everything from growth to aging, and could potentially be used in treating skin diseases.

Safflower (Carthamus tinctorius) extract helps hair grow and could be used in hair products.

Using a gene therapy with the Sonic Hedgehog gene helps mice regrow hair faster after losing it from chemotherapy.

Mice are useful for researching human hair loss and testing treatments, despite some differences between species.

Skin and hair can help us understand organ regeneration, especially how certain stem cells might be used to form new organs.

Potassium channel openers like minoxidil help hair grow by acting on hair follicles.

Both immature and mature fat cells are important for hair growth cycles, with immature cells promoting growth and mature cells possibly inhibiting it.

Hair loss in elderly women is often caused by various factors, including hormonal changes after menopause.

Eating isoflavone can help mice grow hair by increasing a growth factor.

The document concludes that while lab results for hair growth promotion are promising, human trials are needed and better testing methods should be developed.

Melatonin affects skin and hair color and protects skin cells, with potential benefits for hair growth and skin health.

Activating β-catenin in certain skin cells speeds up hair growth in mice.

Morroniside may help hair grow and stay in its growth phase by affecting certain cell signals.

An 81-year-old man's white hair began to regain its original color while he was treated with lenalidomide, suggesting that graying hair might be reversible.

Researchers developed a method to grow hair follicle cells for transplantation using a special chip.

Repigmentation in vitiligo may come from melanocyte stem cells in the skin.

Dermal papillae cells, important for hair growth, come from multiple cell lines and can be formed by skin cells, regardless of their origin or hair cycle phase. These cells rarely divide, but their ability to shape tissue may contribute to their efficiency in inducing hair growth.

Merkel cells may have roles in sensing magnetic fields, creating fingerprints, Reiki energy healing, passing on environmental information to offspring, and influencing hair shape.

Hair growth and health are influenced by stress and hormones.

Laser hair removal works well for people with dark hair and light skin, but it's less effective for light hair or dark skin; improvements are expected.

Less AgNOR protein production is linked to hair loss.

Ultraviolet rays damage hair, smoking may cause hair loss, and good nutrition is important for hair health, but genetics mainly decide hair thickness.

Lavender oil significantly promotes hair growth in mice.