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Different types of stem cells and their environments are key to skin repair and maintenance.

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

Hair quality is genetically determined and linked to its composition and strength.

The vitamin D receptor can act without its usual activating molecule, affecting hair growth and skin cancer, but its full range of actions is not well understood.

Tiny particles called extracellular vesicles show promise for skin improvement and anti-aging in facial care but face challenges like low production and lack of research.

B6.Cg-Tyr c−2J Hr hr /J mice have a stronger delayed sunburn reaction and are good for UV research.

Eating fewer calories may slow skin aging and improve skin health through various biological changes.

Melatonin affects skin and hair color and protects skin cells, with potential benefits for hair growth and skin health.

Non-surgical procedures can help reduce wrinkles and stimulate skin repair by understanding skin aging at the molecular level.

Tea, especially green tea, shows promise in cosmetics for skin and hair benefits but more research is needed for effective use.

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

Carvone helps treat skin issues by reducing melanin and stopping harmful cell growth.

Eating collagen peptides may help with skin and hair growth.

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.

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

The document concludes that for hair and feather growth, it's better to target the environment around stem cells than the cells themselves.

Human skin responds to light with protective mechanisms, but more research is needed to understand these processes and their implications for health and therapy.

ATP-dependent chromatin remodeling is crucial for skin development and stem cell function.

Certain nutrients can improve skin health and treat skin problems safely.

The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.

Sensitive skin is often caused by nerve fibers and environmental factors, and can be managed with mild skincare and professional advice.

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

Circadian rhythms are crucial for stem cell function and tissue repair, and understanding them may improve aging and regeneration treatments.

Certain genes control the color of human hair by affecting pigment production.

The circadian clock influences the behavior and regeneration of stem cells in the body.

Understanding how melanocyte stem cells work could lead to new treatments for hair graying and skin pigmentation disorders.

Adult skin quickly reacts to short-term environmental and internal stress, leading to various skin issues and the need for protective measures.

Juniperus plants contain compounds with potential for developing various medical treatments.

Spin traps like PBN could protect skin from pollution and sunlight in cosmetics but need more research for safe use.

Compounds from certain trees used by First Nations people show potential for treating skin conditions and promoting hair growth, but more research is needed to confirm their safety and effectiveness.