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Premature graying of hair may suggest health issues and currently lacks effective treatments.

Bcl-2 overexpression protects against UVB damage but worsens hair loss from chemotherapy.

Mutations in the PTPRQ gene cause significant balance issues in mice due to hair bundle defects in the inner ear.

Autophagy is important for human hair growth and health.

Minoxidil helps regrow hair in female pattern hair loss, but more research needed for other treatments.

Claudin-1 is important for the barrier function and growth of hair.

Hair loss in women often doesn't follow a pattern, isn't linked to age, may be genetic, and can be related to thyroid issues or other health factors.

The hair follicle infundibulum plays a key role in skin health and disease, and understanding it better could lead to new skin disease treatments.

Menopause-related hormonal changes affect hair but are not the only cause of hair changes in middle-aged women.

Oestrogen and thyrotropin-releasing hormone affect prolactin and its receptor in human skin and hair, suggesting new treatment options for related conditions.

Geranium sibiricum extract helps hair grow and is more effective than minoxidil but can be toxic in high concentrations.

Skin and hair can regenerate after injury due to changes in gene activity, with potential links to how cancer spreads. Future research should focus on how new hair follicles form and the processes that trigger their creation.

Female pattern hair loss involves hormonal factors, genetics, and may be linked to low ferritin levels.

ALA-PDT is effective and safe for chronic X-ray dermatitis, providing complete or partial remission.

Human hair follicle dermal cells can effectively replace other cells in engineered skin.

Excipients greatly affect how well curcumin nanocrystals penetrate the skin and target hair follicles.

Melatonin helps Cashmere goats grow more hair by affecting certain genes and cell pathways.

Nd:YAG laser can reduce hair with multiple treatments, but permanent removal isn't guaranteed.

Frontal fibrosing alopecia can cause sudden hair loss on limbs, similar to scalp hair loss.

The article concludes that developing in vitro models for human hair structures is important for research and reducing animal testing, but there are challenges like obtaining suitable samples and the models' limitations.

Activating NRF2 might help treat hair disorders by improving antioxidant defenses.

Steroids, particularly estrogens and 5α-reductase inhibitors, affect blood vessel-related hair growth processes in hair follicle cells.

PI3K/Akt pathway is crucial for hair growth and regeneration.

The 3D scaffold helped maintain hair cell traits and could improve hair loss treatments.

Gata6 is important for protecting hair growth cells from DNA damage and keeping normal hair growth.

The article concludes that the global hair trade is exploitative and reflects complex cultural and economic issues.

Hair fibers interact through classical forces, which are influenced by treatments and products, important for hair care and other applications.

Finasteride potentially treats hair loss by reducing DHT production.

High levels of auxin increase root hair growth by activating RSL2 and producing ROS, while high phosphate levels hinder growth by repressing RSL2.

Commercial hair loss websites promote Propecia by making men feel insecure about baldness and suggesting it's a medical issue needing treatment.