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Human skin makes sexual hormones that affect hair growth, skin health, and healing; too much can cause acne and hair loss, while treatments can manage these conditions.

The skin's layers protect, sense, and regulate the body's internal balance, but can be prone to cancer.

Notch signalling helps skin cells differentiate and prevents tumors.

Insulin resistance and obesity are key factors in the development and worsening of polycystic ovary syndrome, and lifestyle changes are important for managing it.

The human sebocyte culture model has improved understanding of oily skin and acne, and how they can be treated.

The hedgehog signalling pathway is key in skin development and basal cell carcinoma, offering insights for prevention and treatment.

Hair follicle stem cells are key for hair and skin regeneration, can be reprogrammed, and have potential therapeutic uses, but also carry a risk of cancer.

Dermatoscopy and videodermatoscopy are useful for diagnosing and monitoring various skin, hair, and nail conditions.

Different types of stem cells in hair follicles play unique roles in wound healing and hair growth, with some stem cells not originating from existing hair follicles but from non-hair follicle cells. WNT signaling and the Lhx2 factor are key in creating new hair follicles.

New research suggests that skin cell renewal may not require a special type of cell previously thought to be essential.

The document concludes that more research is needed to better understand and treat primary cicatricial alopecias, and suggests a possible reclassification based on molecular pathways.

Too much Smad7 changes skin and hair development by breaking down a protein called β-catenin, leading to more oil glands and fewer hair follicles.

Cathepsin L is essential for normal hair growth and development.

Wounded skin cells can revert to stem cells and help heal.

Skin aging is due to impaired stem cell mobilization or fewer responsive stem cells.

Hair follicles are promising targets for delivering drugs effectively.

Pregnancy can cause skin darkening, varicose veins, more sweating, hair growth, hair loss after birth, nail changes, and gum inflammation.

Estrogen loss during menopause worsens skin health, but hormone replacement therapy may improve it, though more research is needed.

Antibiotics can reduce acne but may lead to resistant bacteria, and understanding the skin's bacteria is important for treatment.

Adam10 enzyme is crucial for healthy skin and proper Notch signaling.

Scientists turned mouse stem cells into skin cells that can grow into skin layers and structures.

The study found that two enzymes linked to hair loss are located in different parts of the scalp, supporting a common treatment's effectiveness.

Hormones significantly affect hair and oil gland function in the skin, and more research is needed on skin-related hormone disorders.

A WNT10A gene mutation leads to ectodermal dysplasia by disrupting cell growth and differentiation.

Male pattern baldness involves smaller hair follicles, larger oil glands, and other tissue changes, but not major blood supply issues.

The document concludes that accurate diagnosis of different types of hair loss requires careful examination of hair and scalp tissue, considering both clinical and microscopic features.

The method effectively measures lipid changes and drug effects on skin follicles.

The chemicals 17βC and its methyl ester can block the effects of testosterone on hamster skin but not the effects of DHT.

Mutant mice help researchers understand hair growth and related genetic factors.

The skin protects the body and is constantly renewed by stem cells; disruptions can lead to cancer.