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

PGD2 stops hair growth and is higher in bald men with AGA.

Stress stops hair growth in mice by causing early hair growth phase end and harmful inflammation through a specific nerve-related pathway.

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

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

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

Capsaicin, found in chili peppers, can slow down hair growth by affecting skin cells and hair follicles.

Male hormones, particularly DHT, are linked to male pattern hair loss, and treatments like finasteride can help, but they don't work for postmenopausal women's hair loss, which may have different causes.

CDP is crucial for lung and hair follicle cell development.

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.

Stem cell niches support, regulate, and coordinate stem cell functions.

Chitosan nanofiber scaffolds improve skin healing and are promising for wound treatment.

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.

The Sonic hedgehog pathway is crucial for new hair growth during mouse skin healing.

The document concludes that a better understanding of cell changes during wound healing could improve treatments for chronic wounds and other conditions.

Stem cell therapy, particularly using certain types of cells, shows promise for treating hair loss by stimulating hair growth and development, but more extensive trials are needed to confirm these findings.

The document concludes that specific cells are essential for hair growth and more research is needed to understand how to maintain their hair-inducing properties.

Modulating BMP activity changes the number, size, shape, and type of ectodermal organs.

Oxidative stress contributes to hair graying and loss as we age.

The document concludes that understanding hair structure is key to diagnosing hair abnormalities and recommends gentle hair care for management.

TRP channels in the skin are important for sensation and health, and targeting them could help treat skin disorders.

Animals that change color with the seasons mainly do so in response to daylight changes, but climate change is causing camouflage problems that may require evolutionary changes.

Correct skin biopsy techniques are crucial to avoid misdiagnosis of skin diseases.

The document concludes that proper diagnosis and a combination of medical, hair-care, and surgical treatments are important for managing alopecia in black women.

One minoxidil-sensitive potassium channel exists in human hair follicles.

Mutant CDP/Cux protein causes hair defects and reduced male fertility in mice.

Hair elemental analysis could be useful for health and exposure assessment but requires more standardization and research.

Notch/CSL signaling controls hair follicle differentiation through Wnt5a and FoxN1.