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Cancer rates are increasing in developed countries, with estrogen, aging, low vitamin D3, and HPV infection as common causes.

Melatonin directly affects mouse hair follicles and may influence hair growth.

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

Skin cells produce and activate vitamin D, which regulates skin functions and supports hair growth.

Liposomes improve drug delivery and reduce skin irritation in dermatology.

Low doses of some substances can be beneficial, while high doses can be harmful or toxic.

Smoking harms the skin, causing early aging and increasing cancer risk, but stopping smoking can improve skin health.

The document concludes that various clinical methods are used to assess ageing skin and the effectiveness of anti-ageing products.

Oxidative stress damages hair and contributes to aging, and managing it can help maintain hair health.

The document explains hair growth and shedding, factors affecting it, and methods to evaluate hair loss, emphasizing the importance of skin biopsy for diagnosis.

New treatments targeting skin stem cells show promise for skin repair, anti-aging, and cancer therapy.

Facial aging is caused by natural processes and external factors, and can be managed with preventative measures and a variety of treatments tailored to individual needs.

Melanoma development can be linked to the breakdown of skin's melanin-producing units.

Human hair varies widely and should be classified by curl type rather than race.

Hair ages due to various factors and treatments like minoxidil and finasteride can help, but more research and better public awareness are needed.

Hair loss improved with treatment and successful transplant.

Higher TGF-β signaling may increase skin cancer risk in organ transplant recipients.

Genetic defects and UV radiation cause skin damage and aging.

Hormones affect skin aging, and treatments targeting hormonal balance may improve skin health.

Some nutrients and antioxidants may improve skin and hair health, but more research is needed to confirm these benefits.

Dermatological conditions are complex, and treatments have mixed results.

Vitamin D is crucial for bone health and preventing serious diseases.

Mice without the vitamin D receptor are more prone to UV-induced skin tumors.

Minoxidil and Finasteride are effective for male baldness; more research is needed for hair aging treatments.

Exosomes could be a promising way to help repair skin and treat skin disorders.

Cannabinoids may help treat various skin conditions.

Melatonin, usually known for sleep regulation, also has antioxidant properties that can protect skin, stimulate hair growth, and improve skin conditions, with topical application being more effective than oral use.

Melatonin, a hormone, can help protect skin from aging by reducing stress, inflammation, and damage, and may also help treat hair loss in women.

New treatments like nanotechnology show promise in improving skin cancer therapy.

Dermal factors are crucial in regulating melanin production in skin.