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Dihydrotestosterone affects hair growth by changing the Wnt/β-catenin pathway, with low levels helping and high levels hindering growth.

Twisting hair weakens it, but strength can be recovered at low twist levels.

Pica disorder in central Iraq is mainly found in females and is linked to low iron levels; treatment with iron improves most patients.

UK medical students lack dermatology education, liver biopsy patients with risk factors show more fibrosis, and certain fungi resist drugs due to melanin; genetics may influence female hair loss.

Excessive hair growth in women, often from high androgen levels, is usually caused by PCOS, and can be treated with hair removal, medication, and possibly weight loss.

The book is a useful guide for learning about chemical peels, with practical information for all skill levels.

Patients with myotonic dystrophy often have skin problems that suggest early aging and vitamin D issues, and the severity of these problems is linked to their genetic condition and vitamin D levels.

Telogen effluvium is linked to deficiencies in iron, vitamin B12, and thyroid function.

Homemade hair treatments can significantly lower drug levels in hair, possibly causing false-negative drug tests.

Thyroid hormones help hair grow, reduce hair loss, and increase hair pigment.

Polydeoxyribonucleotide (PDRN) may help lighten skin and treat hyperpigmentation.

Gene regulation could revolutionize hair color by altering pigmentation from within.

Cirsium japonicum flower extract increases melanin production and could help treat depigmentation conditions.

Black sheep have higher levels of Gnαs and Gnα11 proteins, which may affect their coat color.

The document concludes that the skin is a complex organ providing protection, sensation, and healing, with challenges in treating conditions like itchiness.

Redheaded people have higher levels of vitamin D precursor, suggesting their hair color may be an adaptation to low sunlight areas.

Melanocyte stem cells in hair follicles are key for hair color and could help treat greying and pigment disorders.

Laser hair removal effectiveness depends on targeting hair structures without harming the skin, and improvements require more research and expert collaboration.

The document concludes that assessing hair follicle damage due to cyclophosphamide in mice involves analyzing structural changes and suggests a scoring system for standardized evaluation.

We don't fully understand how sunlight damages different types of hair.

Condensed nanofat with fat grafts effectively improves atrophic facial scars.

Applying a specific inhibitor lightens skin and hair color.

Multiphoton microscopy is a promising tool for detailed skin imaging and could improve patient care if its challenges are addressed.

Keratinocytes control how melanocytes work.

Different lab conditions and light treatment methods change how human skin cells respond to light therapy.

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

Men's hair loss is caused by hormones and genes, and can be treated with medication and surgery, while graying is due to aging and has no prevention except dyeing.

Different drugs for prostate-related urinary symptoms work but have various side effects, and treatment should be tailored to the individual.

Platelet-Rich Plasma (PRP) shows promise for treating various skin conditions, but more research is needed to standardize its use.

Patient-derived melanocytes can potentially treat vitiligo by restoring skin pigmentation.