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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.

Visible light can damage skin and most sunscreens don't block it well; more research is needed on its effects and protection methods.

The new lab-grown skin model is good for testing sunscreen's protection against DNA damage from UV light.

Ultraviolet rays damage hair, smoking may cause hair loss, and good nutrition is important for hair health, but genetics mainly decide hair thickness.

Hair greying is linked to reduced ATM protein in hair cells, which protects against stress and damage.

Environmental and cosmetic factors, including heat, chemicals, and sun exposure, can cause hair loss and damage.

Outside factors like grooming, chemicals, and the environment can damage hair and cause disorders.

N-acetyl-L-cysteine (NAC) can prevent DNA damage and protect cells from harm.

Ginsenoside Rg1 protects mouse skin from UVB damage and helps control inflammation.

New UVA-responsive nanocapsules effectively kill microorganisms in hair follicles when activated by light.

Light affects skin health, aging, and cancer risk, and new light-based treatments and imaging are promising for skin care.

Platycladus orientalis flavonoids protect balding hair from UV damage and slow hair color change.

Hair aging is caused by stress, hormones, inflammation, and DNA damage affecting hair growth and color.

Different types of skin cells and immune cells play a role in healing UV-damaged skin, with chronic UV exposure causing lasting damage to certain skin cells.

Taking vitamin C and vitamin E twice a day can help prevent sunburn and DNA damage from UVB exposure.

Caffeic acid protects human scalp cells from UV damage.

Skin aging is caused by stem cell damage and can potentially be delayed with treatments like antioxidants and stem cell therapy.

Different types of sun exposure can damage skin cells and affect healing, with chronic exposure being more harmful, and certain immune cells help in the repair process.

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

Different types of stem cells exist within individual skin layers, and they can adapt to damage, transplantation, or tumor growth. These cells are regulated by their environment and genetic factors. Tumor growth is driven by expanding, genetically altered cells, not long-lived mutant stem cells. There's evidence of cancer stem cells in skin tumors. Other cells, bacteria, and genetic factors help maintain balance and contribute to disease progression. A method for growing mini organs from single cells has been developed.

Lupus can affect the scalp and nails, often causing hair loss and nail damage, and needs early aggressive treatment to prevent permanent damage.

Autoimmune diseases can cause hair loss, and early treatment is important to prevent permanent damage.

Environmental stressors like UV radiation, pollution, and extreme temperatures can damage skin and lead to diseases and aging.

Nanoparticles can enter the skin, potentially causing toxicity, especially in damaged skin.

UV radiation can help sterilize wounds and promote healing but requires careful use to avoid damaging cells.

Hair greying is caused by oxidative stress damaging hair follicles and melanocytes.

Photodynamic therapy is the preferred treatment for skin precancer due to its effectiveness and safety.

Laser and light therapies, especially the 308 nm excimer laser, are effective and safe for treating alopecia areata, but more research is needed.

Most clinicians follow discharge guidelines, many lupus patients don't use sunscreen regularly, dithranol is effective for psoriasis, biopsy methods should be based on lesion type, voriconazole may raise skin cancer risk, a new scale can help diagnose female hair loss early, and most melanomas may develop from existing moles.