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The skin is a complex barrier for drug penetration, but understanding its structure and interactions can improve drug delivery methods.

Hair follicles help absorb and store topical compounds, aiding targeted drug delivery.

Androgens can both increase and decrease hair growth in different parts of the body.

Stem cell niches are crucial for regulating stem cell renewal and differentiation, and understanding them can help in developing regenerative therapies.

Scientists have found a way to create hair follicles from skin cells of newborn mice, which can grow and cycle naturally when injected into adult mouse skin.

Overexpression of activin A in mice skin causes skin thickening, fibrosis, and improved wound healing.

Artificial skin development has challenges, but new materials and understanding cell behavior could improve tissue repair. Also, certain growth factors and hydrogel technology show promise for advanced skin replacement therapies.

A new microneedle patch made from hair proteins helps regrow hair faster and better than current treatments.

Alopecia areata is likely an autoimmune disease with unclear triggers, involving various immune cells and molecules, and currently has no cure.

Regulatory T-cells are important for healing and regenerating tissues in various organs by controlling immune responses and aiding stem cells.

Estrogens can improve skin aging but carry risks; more research is needed on safer treatments.

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

Researchers created human hair follicles using a new method that could help treat hair loss.

Hair follicles significantly increase the speed and amount of caffeine absorbed through the skin.

Menopause can lead to skin and hair problems due to hormonal changes, but hormone replacement therapy might help slow these effects.

Regenerated fully functional hair follicles using stem cells, with potential for hair regrowth therapy.

New effective scar treatments are urgently needed due to the current options' limited success.

Bone Morphogenetic Proteins (BMPs) help control skin health, hair growth, and color, and could potentially be used to treat skin and hair disorders.

Chemotherapy can cause skin problems like hair loss, mouth sores, and skin darkening, and recognizing these can affect treatment decisions.

The conclusion is that accurate diagnosis of different types of hair loss requires good teamwork between skin doctors and lab experts.

Low iron levels may be linked to some types of hair loss in women.

Latanoprost can make eyelashes longer, thicker, and darker.

Telocytes might help with skin repair and regeneration.

Stress-related substance P may lead to hair loss and negatively affect hair growth.

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

Androgens can cause hair growth in some areas and hair loss on the scalp.

Tight junctions are key for skin protection and controlling what gets absorbed or passes through the skin.

TGF-β is crucial for controlling stem cell behavior and changes in its signaling can lead to diseases like cancer.

Understanding hair growth involves complex interactions between molecules and could help treat hair disorders.

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