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Faulty Notch signalling may cause hair follicle changes and inflammation in hidradenitis suppurativa.

Feather patterns form through genetic and epigenetic controls, with cells self-organizing into periodic patterns.

Nanotechnology shows promise for better chronic wound healing but needs more research.

Wnt signaling is crucial for skin development and hair growth.

Chitosan, a natural substance, can be used to create tiny particles that effectively deliver various types of drugs, but more work is needed to improve stability and control of drug release.

Different treatments for Hidradenitis suppurativa range from antibiotics and hormonal therapies to surgery, depending on severity.

Non-hormonal treatments should be used first for sexual dysfunction in postmenopausal breast cancer patients on aromatase inhibitors, with hormones as a second option.

Activating Nrf2 in skin cells causes skin disease similar to chloracne in mice.

Minoxidil and Finasteride are effective for male baldness; more research is needed for hair aging treatments.

PRC2 is essential for maintaining intestinal cell balance and aiding regeneration after damage.

Polydopamine is a safe, effective, and permanent hair dye that turns gray hair black in one hour.

SDF-1/CXCL12 and its receptor CXCR4 are crucial for melanocyte movement in mouse hair follicles.

Nanomaterials show promise in improving wound healing but require more research on their potential toxicity.

Microneedle technology has advanced for painless drug delivery and sensitive detection but faces a gap between experimental use and clinical needs.

Stem cells, especially from fat tissue and Wharton's jelly, can potentially regenerate hair follicles and treat hair loss, but more research is needed to perfect the treatment.

Nanotube-based hair treatments could improve hair health and growth, and offer long-lasting effects.

Gene therapy shows promise for healing chronic wounds but needs more research to overcome challenges.

Muscles can make their own androgens, which may help muscle growth.

Hyaluronic acid increases collagen synthesis safely, while poly-L-lactic acid may cause complications by affecting fibroblasts.

Direct vasodilators and sympatholytic agents are still useful for certain conditions despite being less common due to side effects and newer drugs.

Nanocarrier technology in cosmetics improves ingredient delivery and effectiveness while reducing side effects.

Photobiomodulation therapy helps manage cancer treatment side effects but needs more research for optimization.

The conclusion is that understanding how hair follicle stem cells live or die is important for maintaining healthy tissue and repairing injuries, and could help treat hair loss, but there are still challenges to overcome.

Human skin can provide stem cells for tissue repair and regeneration, but there are challenges in obtaining and growing these cells safely.

Hair graying may be caused by stem cell depletion from stress or melanocyte damage.

Hair follicle stem cells help maintain skin health and could improve skin replacement therapies.

IL-1 family cytokines are crucial for skin defense and healing, but their imbalance can cause skin diseases.

The new wound dressing helps skin heal faster and fights infection.

Testosterone's effects on COVID-19 are unclear and need more research.

PCOS in teen girls should be managed with lifestyle changes and sometimes medication to improve symptoms and health.