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Oxidative stress causes hair to gray by damaging and killing pigment cells.

Melanocyte activity in hair follicles is linked to the hair growth cycle, being active in growth phases and inactive in rest phases.

Adult vibrissa follicle stem cells can regenerate hair follicles, glands, and skin.

Black sheep have higher levels of Gnαs and Gnα11 proteins, which may affect their coat color.

Certain sex hormones and antiandrogens can either slow down or speed up the growth of human hair follicle cells depending on their concentration.

Calcipotriol treatment for scalp psoriasis does not cause hair loss.

Syphilis patients showed abnormal hair root changes, with no difference between primary and secondary stages.

Testing hair roots with a special dye is a simple, non-invasive way to check disease progress in pemphigus vulgaris patients.

The study found that stem cells and neutrophils are important for regenerating hair follicle structures in mice.

Cilostazol helps hair grow by making hair root cells grow faster and changing growth factor levels.

Squalene may be a marker for certain types of alopecia.

Tight hairstyles and chemical relaxers can cause hair loss known as traction alopecia.

Genes related to calcium signaling and lipid metabolism are important for curly hair in Mangalitza pigs.

The research found that postmortem root bands in hair are likely caused by the breakdown of a specific part of the hair's inner structure after death.

Hormones, nutrition, and seasonal changes regulate hair growth cycles, with androgens extending growth phases and factors like aging and malnutrition affecting hair loss and thinning.

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

Less AgNOR protein production is linked to hair loss.

Laser hair removal effectiveness depends on targeting hair structures without harming the skin, and improvements require more research and expert collaboration.

The document concludes that electrolysis and thermolysis can permanently remove hair but calls for better regulation to ensure safety, and notes a possibility of hair regrowth and rare complications.

NF-κB is crucial for different stages and types of hair growth in mice.

7-Phloroeckol from brown algae may help hair grow.

Liaoning Cashmere goat hair follicles show synchronized growth patterns with lowest activity in May.

Hair is a complex organ, and understanding its detailed structure and growth phases is crucial for analyzing substances within it.

Red fox, golden jackal, and gray wolf hairs have similar features but differ in length, thickness, and inner structure.

Minoxidil nanoparticles can potentially be a more effective treatment for hair growth than current treatments.

Lindera strychnifolia root extract may help balance scalp bacteria and potentially reduce hair loss.

Dermoscopy shows that diffuse alopecia areata progresses through specific hair growth stages.

Lipids in Japanese hair help maintain glossiness and structure.

The document concludes that accurate diagnosis of different types of hair loss requires careful examination of hair and scalp tissue, considering both clinical and microscopic features.

Pulsed-intense light can significantly reduce hair, with effectiveness depending on treatment number and timing, and has mild side effects.