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Certain skin drugs and topical agents, including some natural extracts and fragrances, can cause allergic reactions. Some hair dyes and extensions, as well as minoxidil, a hair growth treatment, can also cause allergies. Botulinum toxin A can effectively reduce sweat but may have temporary side effects.

In 2001, the FDA approved 12 new drugs for children to treat allergies, asthma, ADHD, birth control, and other conditions.

Hair disease research is a growing and evolving field in dermatology, with recent significant advances.

A new compound with strong antiandrogenic effects was found, potentially useful for treating conditions like acne and prostate cancer.

Natural products like propolis are causing more skin allergies, and certain skin treatments and medications have various side effects and risks.

Some chemicals can permanently or temporarily remove color from skin and hair, which can be distressing and is not well-regulated in cosmetics.

Certain maturity signs appear before and after the first release of sperm in boys.

Method found to accurately identify finasteride impurities using liquid chromatography.

Arrector pili muscle regulates hair follicle stem cells, DNA methylation needed for hair cycling, and Wnt/B-catenin signaling starts hair growth.

Method detects finasteride in plasma at very low concentrations.

The document concludes that skin stem cells are important for hair growth and wound healing, and could be used in regenerative medicine.

Male hormones may play a role in the development of heart disease, and more research is needed to understand their effects.

Herbal remedies can cause adverse effects and need more safety research.

Vitiligo is a skin condition causing white spots, more common in women, often starts before age 20, and can affect mental health.

Hair growth is cyclic and influenced mainly by local factors.

Photobiomodulation therapy using red and near-infrared light can reduce inflammation and aid in healing various conditions.

Melatonin affects many body functions beyond sleep by interacting with specific receptors in various tissues.

Proteasome inhibitors are promising treatments for various cancers, autoimmune diseases, and other conditions.

The enzyme steroid sulfatase is linked to breast cancer and other conditions, and inhibitors are being developed for treatment.

Coumarin derivatives show promise as anti-estrogenic agents for treating breast cancer, with some in clinical trials.

Improving artificial vascular grafts requires better materials and surface designs to reduce blood clotting and support blood vessel cell growth.

DNA profiling in forensics has improved, but predicting physical traits and ancestry from DNA has limitations and requires ethical consideration.

Myo-inositol supplements may improve insulin sensitivity and help with conditions like PCOS and gestational diabetes, but more research is needed.

Human skin can make serotonin and melatonin, which help protect and maintain it.

Microspheres about 1.5 micrometers in size can best penetrate hair follicles, potentially reaching important stem cells.

Increasing mir-302 turns human hair cells into stem cells by changing gene regulation and demethylation.

The skin has a complex immune system that is essential for protection and healing, requiring more research for better wound treatment.

Polysaccharides have many health benefits and are used in drugs, but isolating and purifying them is complex and requires careful methods.

Certain proteins, Lgr5 and Lgr6, are important markers of adult stem cells and are involved in tissue repair and cancer development.

The article suggests managing interferon beta therapy side effects in MS with dose adjustments, medications, and patient education.