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

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

People with hair loss have more androgen receptors and enzymes in certain follicles, with men and women showing different patterns.

A gene called APCDD1, which controls hair growth, is found to be faulty in a type of hair loss called hereditary hypotrichosis simplex.

Men are more likely to have severe COVID-19 cases and fatalities than women due to factors like lifestyle, aging, and biological differences.

Special fiber materials boost the healing properties of certain stem cells.

Tight junctions are key for skin protection and controlling what gets absorbed or passes through the skin.

Nanoparticles improve drug delivery through the skin but more research is needed on their long-term effects and skin penetration challenges.

Keratinocytes help heal skin wounds by interacting with immune cells and producing substances that kill pathogens.

Microneedles improve drug delivery in various body parts, are safe and painless, and show promise in cosmetology, vaccination, insulin delivery, and other medical applications.

The update highlights that non-classic congenital adrenal hyperplasia is common in women with excess male hormones, requires specific hormone tests for diagnosis, and has various treatment options depending on age and symptoms.

Zinc is crucial for nutrition, especially in patients with specific health conditions, and requires careful supplementation and monitoring.

Animals that change color with the seasons mainly do so in response to daylight changes, but climate change is causing camouflage problems that may require evolutionary changes.

Wnt and Notch signaling help wound healing by promoting cell growth and regulating cell differentiation.

Fullerenes show potential in skin care but need more safety research.

Male hormones and their receptors play a key role in hair loss and skin health, with potential new treatments being explored.

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

Hormones significantly affect hair and oil gland function in the skin, and more research is needed on skin-related hormone disorders.

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

Wool follicles are complex, involving interactions between different cell types and structures.

Sponge helps heal wounds faster with less inflammation and better skin/hair growth.

Animal models have helped understand hair loss from alopecia areata and find new treatments.

Hair keratin-associated proteins are essential for strong hair, with over 80 genes showing specific patterns and variations among people.

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

Platelet preparations generally show positive effects on wound healing and facial rejuvenation, but more thorough research is needed to confirm their effectiveness.

Microneedle technology has improved drug delivery and patient comfort but needs more research for broader use.

Lower levels of certain brain chemicals are linked to worse PTSD symptoms in men.

Blocking BACE1 and BACE2 enzymes causes hair color loss in mice.

LCN may improve finasteride delivery for hair loss treatment.

Graft-versus-host disease is a complication where donor immune cells attack the recipient's body, often affecting the skin, liver, and gastrointestinal tract.