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Melanocytes produce melanin; their defects cause vitiligo and hair graying, with treatments available for vitiligo.

Vitamin D is important for skin health and can help treat and prevent various skin conditions.

Hair aging is caused by stress, hormones, inflammation, and DNA damage affecting hair growth and color.

A type of collagen helps hair grow by boosting cell growth and activating a specific hair growth pathway.

Dopaminergic therapy in Parkinson's disease patients is linked to increased hair loss.

Hair loss from Telogen Effluvium can be managed by treating the underlying cause and may improve with treatments like minoxidil.

Telogen Effluvium is a common, usually reversible hair loss condition, often improved by removing the trigger and possibly treated with various products, though their effectiveness is uncertain.

Macrophages are more involved in Lichen planopilaris than in Frontal fibrosing alopecia.

The nucleus is key in controlling skin growth and repair by coordinating signals, gene regulators, and epigenetic changes.

Tissue from dog stem cells helped grow hair in mice.

Proteins like aPKC and PDGF-AA, substances like adenosine and ATP, and adipose-derived stem cells all play important roles in hair growth and health, and could potentially be used to treat hair loss and skin conditions.

The article concludes that hormonal therapy is an effective long-term acne treatment, even for those without hormonal imbalances.

Some treatments like topical oxygen and stem cells show promise for wound healing and hair growth, but evidence for modern dressings over traditional ones is limited.

Half of people with Alopecia Areata may see hair regrowth within a year without treatment, but recovery is unpredictable.

Melatonin in the skin helps protect against damage from stress and UV rays, and could be used to treat certain skin conditions.

Insulin resistance is a key factor in polycystic ovary syndrome, but genetics may also contribute.

The conclusion is that proper signaling is crucial for hair growth and development, and errors can lead to cancer or hair loss.

Hair color production in mice is closely linked to the hair growth phase and may also influence hair growth itself.

Stem cell niches support, regulate, and coordinate stem cell functions.

Stem cells in the hair follicle are regulated by their surrounding environment, which is important for hair growth.

Macrophages help heal nerves by aiding the maturation of Schwann cells and are important for nerve repair.

Tiny particles from stem cells help activate hair growth cells and encourage hair growth in mice without being toxic.

The document concludes that hirsutism is the main sign for diagnosing hyperandrogenism, which requires a detailed patient history and physical exam.

Testosterone therapy seems safe for postmenopausal women for a few years, but more research is needed for long-term effects.

Platelet-rich plasma treatment can significantly increase hair count and density in men with pattern baldness, and these improvements can last up to 3 months.

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

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

DHT's role in hair loss is important, but measuring its level for diagnosis is questionable.

IGF-1 increases whisker growth in transgenic mice.

Olive leaf compound oleuropein helps grow hair in mice.