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Nerve signals are crucial for hair follicle stem cells to become skin stem cells and help in wound healing.

Skin needs dermal β-catenin activity for hair growth and skin cell multiplication.

The dermal papilla is crucial for hair growth and health, and understanding it could lead to new hair loss treatments.

The human hair follicle can store topical compounds and be targeted for drug delivery with minimal side effects.

Mice can grow new hair follicles after skin wounds through a process not involving existing hair stem cells, but requiring more research to understand fully.

Mice can correct hair follicle orientation without certain genes, but proper overall alignment needs those genes.

Nanoparticles can be used to deliver drugs to hair follicles, potentially improving treatments for conditions like acne and alopecia, and could also be used for vaccine delivery and gene therapy.

Azelaic acid micro/nanocrystals, especially with ultrasound and salicylic acid, greatly improve acne treatment.

VEGF helps hair grow and determines follicle size by increasing blood vessel growth.

400 nm particles penetrate hair follicles best, but mouse models aren't fully reliable for human studies.

The Hedgehog signaling pathway is important for skin and hair growth and can lead to cancer if it doesn't work right.

ICAM-1 helps regulate hair growth cycles and skin remodeling.

Curcumin nanocrystals in simple gels effectively penetrate hair follicles, but humectants can reduce this efficacy.

Common hair loss disorders may not need stem cell therapy, but could benefit from other treatments like hair cycle control and immune restoration therapy.

Red LED light improves the quality of Angora rabbit wool by promoting hair growth.

Nanostructured lipid carriers effectively deliver tofacitinib to hair follicles, reversing hair loss in alopecia areata.

New microspheres help heal skin wounds and regrow hair without scarring.

Chemotherapy may cause recurring hair loss due to an autoimmune response.

Nanoparticle-based drug delivery to hair follicles is more effective when tested under conditions that match skin behavior.

Environmental pollutants can damage hair health and cause hair loss.

Platelet-rich plasma may help hair follicle cells grow by affecting certain genes and pathways.

Damage to skin releases dsRNA, which activates TLR3 and helps in skin and hair follicle regeneration.

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

The conclusion is that we need more effective hair loss treatments than the current ones, and these could include new drugs, gene and stem cell therapy, hormones, and scalp cooling, but they all need thorough safety testing.

Researchers found four key proteins that affect the development of a specific hair type in Yangtze River Delta white goats.

Mouse touch-sensitive nerve cells adjust their connections based on competition with other similar cells.

The document concludes that hair is complex, with a detailed growth cycle, structure, and clinical importance, affecting various scientific and medical fields.

Special and immunohistochemical stains are not routinely needed for diagnosing hair disorders.

The hair-growth formula with L-cystine helps protect and grow hair cells.

Nanoencapsulated antibiotics are more effective in treating hair follicle infections than free antibiotics.