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Aging causes hair to gray and thin, with the timing of graying varying by race, and factors like oxidative stress and genetics can lead to hair loss.

PCOS is a hormonal disorder causing infertility and menstrual problems, often linked to obesity and can lead to acne, treated with hormonal and insulin-sensitizing medications.

Alopecia areata is a common autoimmune condition causing varying hair loss, diagnosed by specific patterns of inflammation around hair follicles, with several treatment options available.

The wigs made from human hair and polypropylene were mostly well-tolerated and durable in rabbits, suggesting they could be a new option for people with extensive hair loss.

Lasers are effective for some skin conditions but can cause side effects like scarring and pigment changes; careful selection is important, and botulinum toxin type A is successful in reducing sweat in palmar hyperhidrosis.

Brain hormones significantly affect hair color and could potentially be used to prevent or reverse grey hair.

Human hair follicles have a unique metabolism that changes between growth stages and may contribute to baldness.

The document concludes that various skin conditions have specific treatments, ranging from antihistamines for urticaria to surgery and medication for tumors and chronic skin diseases.

Marine-derived ingredients show potential for hair health but need more human trials to confirm effectiveness.

Autophagy prevents early aging and maintains lipid and pheromone balance in mouse glands.

The document recommends using both clinical evaluation and various measurement methods to assess skin greasiness, considering factors like temperature and hormones.

Goat hair follicles have insulin-like growth factor-I receptors that might affect hair growth, but no melatonin receptors were found.

Sebum helps protect human skin from microbes.

Combining SVF and PRP speeds up wound healing.

Isotretinoin can cause serious birth defects and needs careful use, especially in pregnant women.

Adult mice with CBS deficiency show minimal health issues and normal lifespan despite high homocysteine levels.

Understanding how androgens and their receptors work can lead to improved treatments for skin diseases.

Certain gene variations are linked to a higher risk of severe acne, suggesting a genetic influence on the condition.

We now understand more about what causes acne and this could lead to better, more personalized treatments.

Increased FGFR2b signaling, influenced by androgens, plays a role in causing acne.

C/EBPalpha and C/EBPbeta are crucial for normal skin and oil gland cell development in adult mice.

ACBP is crucial for healthy skin in mice.

Hair color is determined by different melanins and changes with age.

The compounds tested could potentially treat hair loss and alopecia.

Hidradenitis suppurativa is a skin disease caused by the breakdown of the skin's natural immune barriers, especially around hair follicles.

Adult vibrissa follicle stem cells can regenerate hair follicles, glands, and skin.

Greasy hair spreads sebum twice as much as nongreasy hair over time.

Adapalene 0.1% effectively reduces acne by decreasing comedones and altering skin properties.

Dapsone gel 5% is effective and safe for treating acne.

Hair color is determined by melanin produced and transferred in hair follicles.