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Natural products in cosmetics are beneficial for skin and hair care with low toxicity.

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

Air pollution worsens skin diseases and aging by causing inflammation and oxidative stress.

Manage vitiligo with treatments, address emotions, and use camouflage techniques.

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

Chitin and chitosan are useful in cosmetics for oral care, haircare, and skincare, including UV protection and strength improvement.

Tiny pollution particles called PM2.5 can harm skin cells by causing stress, damage to cell parts, and cell death.

Male and female skin differ in many ways, which could lead to gender-specific skin treatments.

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

Some herbal therapies may help with skin conditions, but more research is needed to confirm their safety and effectiveness.

Melatonin may benefit skin health and could be a promising treatment in dermatology.

The 2003 guidelines suggest that while some treatments can regrow hair in alopecia areata, none alter the disease's progression, and wigs may be the best option for extensive hair loss.

Current treatments for alopecia show no significant long-term benefits.

Vitamin D and its receptor regulate skin functions like cell growth, immunity, hair cycle, and tumor prevention.

Alopecia areata causes hair loss, has no cure, and various treatments exist.

Liposomes improve drug delivery and reduce skin irritation in dermatology.

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.

No single treatment is consistently effective for alopecia areata, and more research is needed.

Understanding how cells die in the skin is important for treating skin diseases and preventing hair loss.

Vitamin D has potential benefits for cancer prevention, heart health, diabetes, obesity, muscle function, skin health, and immune function, but clinical results are mixed and more research is needed.

New single-cell analysis techniques are improving our understanding of stem cells and could help in treating diseases.

Skin surface lipids are important for skin health and altering them could help prevent aging and treat skin conditions.

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

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

The circadian clock is crucial for tissue renewal and regeneration, affecting stem cell functions and having implications for health and disease.

Different types of skin pores should be identified correctly and evaluated with suitable methods for reliable results.

Alpha-hydroxy acids, like glycolic acid, safely improve skin issues and work on all skin types.

Older adults have a high rate of skin cancers like basal cell carcinoma and melanoma, mainly due to UV exposure and age.

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

Treatments for melanin disorders exist, but more effective options needed.