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The skin's internal clock affects healing, cancer risk, aging, immunity, and hair growth, and disruptions can harm skin health.

Estrogens help reduce skin aging, and SERMs might offer similar benefits without the risks of hormone therapy.

The document concludes that while significant progress has been made in understanding skin biology and stem cells, more research is needed to fully understand their interactions with their environment.

Hair, teeth, and mammary glands develop similarly at first but use different genes later.

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

Pregnancy can cause skin pigmentation, stretch marks, and changes in hair, nails, and sweat glands, with most resolving after birth.

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

The document concludes that molluscum contagiosum is a common, benign skin infection in children, often healing without scarring.

Fetal skin heals without scarring due to unique cells and processes not present in adult skin healing.

Skin diseases differ between Ghana and the UK, with infections most common in Ghana and malignant skin diseases most prevalent in the UK.

EGF and KGF signalling prevent hair follicle formation and promote skin cell development in mice.

Environmental factors, hormones, nutrition, and stress all significantly affect skin health and aging.

Fetal skin cells from a cell bank heal wounds faster and with less scarring than adult cells.

Fat-derived stem cells, platelet-rich plasma, and biomaterials show promise for healing chronic skin wounds and improving soft tissue with few side effects.

Advanced human skin models improve drug development and could replace animal testing.

Overexpressing the mineralocorticoid receptor in mouse skin causes skin thinning, early skin barrier development, eye issues, and hair loss.

Finasteride effectively reduces hair loss by decreasing androgen levels.

Pregnancy often causes skin changes like darkening, stretch marks, and hair growth, which may improve after childbirth.

Finasteride reduces scalp DHT levels, potentially treating male pattern baldness.

The document concludes that the skin's immune system is complex, involving interactions with hair follicles, nerves, and microbes, and can protect or cause disease, offering targets for new treatments.

Melatonin affects mouse skin and may regulate skin functions.

The research identified new skin traits in mice, some linked to human skin conditions.

Skin fat plays a key role in immune defense and healing beyond just storing energy.

Shift nurses show altered body temperature and stress hormone levels, suggesting their body clocks adjust to irregular schedules.

Pregnancy can cause normal skin changes that usually go away after childbirth and don't need treatment.

The new biomaterial inspired by ancient Chinese medicine effectively promotes hair growth and heals wounds in burned skin.

Lymphatic vessels are essential for hair follicle growth and skin regeneration.

Advancements in creating skin grafts with biomaterials and stem cells are promising, but more research is needed for clinical application.

JAK inhibitors show promise for treating skin and hair disorders but need more research on long-term safety and effectiveness.

The skin is the largest organ, protecting the body, regulating temperature, and producing hormones.