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Different types of sun exposure damage skin cells and immune cells, with chronic exposure leading to more severe and lasting damage.

Vitamin C and E may help with certain skin and hair conditions, but more research is needed to confirm their effectiveness.

Infrared radiation can cause skin aging and cancer at high temperatures but may have therapeutic benefits at controlled levels.

Nonsteroid treatments for alopecia areata show promise but need more high-quality research.

Inflammation, possibly triggered by a specific bacteria and activated by UV radiation, may contribute to male pattern baldness.

Melanocytes are important for skin and hair color and protect the skin from UV damage.

Melatonin is important for skin health and protection, and can be made by the skin or applied to it.

Oxidative stress contributes to hair graying and loss as we age.

Antioxidants can benefit skin health but should be used carefully to avoid negative effects.

Human skin cells produce proenkephalin, which changes with environmental factors and skin diseases.

Sunlight worsens hair loss; protect scalp.

Most skin changes during pregnancy are harmless and moles don't significantly change, but many women experience pigmentation changes due to hormones and sun exposure.

Caffeine improves hair growth, thickness, and reduces shedding.

The document concludes that the immune-inhibitory environment of the hair follicle may prevent melanoma development.

A 308 nm excimer laser successfully treated a boy with a rare skin condition after about a year of weekly sessions.

Some alternative therapies for vitiligo show promise but need more research.

The authors suggest that scalp hair might protect against COVID-19 and call for more research on scalp health and the virus.

Common cosmetic dermatology techniques improve skin damaged by the sun and aging.

The authors agree more research with proper control groups is needed to understand hair loss.

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

Treatments for autoimmune hair loss have limited success and patients need emotional support and self-acceptance.

Women's hair gets thinner and grayer as they age, with treatments available for hair loss and graying.

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

Nutraceuticals may improve skin health and protect against aging, but more research is needed on their optimal use and possible health risks.

Chemotherapy can cause various skin reactions, with hair loss being the most common, and proper diagnosis and treatment of these reactions are important.

Obesity is linked to various skin problems and may increase the risk of skin cancer.

The new nanocomposite films are stronger, protect against UV, speed up wound healing, and are antibacterial without being toxic.

The document concludes that various dermatological treatments and drugs can cause skin reactions and side effects.

Using sunscreen and moisturizers may increase the chance of developing Frontal fibrosing alopecia (FFA), but the exact reason why is still unclear.

Hair loss can be caused by stress, aging, and harmful substances that create an imbalance in the body's natural processes.