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Testosterone therapy can help postmenopausal women with low sexual desire if monitored carefully.

Human hair keratin fibers have a detailed nano-scale structure that changes with different conditions.

Tight hairstyles, especially on chemically treated hair, can cause reversible hair loss if caught early but may become permanent if not addressed.

Hair root sheaths are more common in non-scarring hair loss and help diagnose the type of hair loss.

Trichoscopy is a useful tool for diagnosing hair and scalp issues, but doctors must be careful to avoid mistakes.

Nanomaterials in biomedicine can improve treatments but may have risks like toxicity, needing more safety research.

The new CoQ10 gel protects mouse skin better against aging from UV light than the old gel.

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

Eyelashes protect the eyes, but more research is needed to understand how.

South American camelids should be sheared early, fleece type affects fiber quality, and the S/P follicle ratio doesn't distinguish between Bolivian llama genotypes.

In vivo confocal scanning laser microscopy is an effective, non-invasive way to study and measure new hair growth after skin injury in mice.

Hair treatments cause significant structural changes, especially with excessive heat, regardless of ethnicity.

Stress worsens Tourette symptoms by increasing allopregnanolone levels.

Trichoscopy is reliable for diagnosing Temporal Triangular Alopecia and can prevent unnecessary biopsies and wrong treatments.

The flap assay grows the most natural hair but takes the longest, the chamber assay is hard work but gives dense, normal hair, and the patch assay is quick but creates poorly oriented hair with some issues.

Light microscopy is useful for diagnosing different hair disorders.

Baicalin helps hair growth by activating specific cell signals and pathways.

Probe detects finasteride with high selectivity and low detection limit.

Sex hormones affect hair and feather growth and may help manage alopecia and hormone-dependent cancers.

A 78-year-old farmer with lung disease had skin lesions from a fungal infection that healed completely with medication.

A new method extracts red dyes from wool without damaging it, although it slightly weakens the wool.

Finasteride reduces response to stress and rewards, affecting behavior and mental health.

Hair gets thinner, grayer, and changes texture with age due to genetics, environment, and cellular changes, affecting the growth cycle.

Reflectance confocal microscopy is a useful, non-invasive tool for diagnosing some skin diseases, with potential for future improvements.

Fiber implantation for baldness is not recommended because it causes many problems and doesn't work well.

Lupus panniculitis of the scalp causes linear hair loss and needs ongoing treatment to prevent recurrence and lupus.

High-dose radiation speeds up aging in skin stem cells.

The conclusion is that skin and hair patterns are formed by a mix of cell activities, molecular signals, and environmental factors.

Nonscarring alopecia has higher hair density than scarring alopecia, and hair density can help diagnose the type of alopecia.

Propionibacterium acnes might be linked to hair casts and possibly alopecia.