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The trichotillometer is a simple, effective tool for diagnosing and assessing female pattern hair loss.

TrichoScan is reliable for counting and measuring hair density but may not accurately assess hair types in women with hair loss.

Merkel cells are abundant in facial vellus hair follicles, especially during the anagen phase.

Neonatal hair can help determine drug exposure during pregnancy.

Understanding the hair growth cycle in mice is crucial for accurate research, as it affects study results and requires careful timing and methods.

Resveratrol may help hair grow, but more research is needed.

Up to 50% of scalp hair can be lost before it appears thin, and treatment is only needed for hair loss caused by diseases or deficiencies.

Topical tretinoin may increase beard hair density.

Fermented red ginseng and a traditional herb mix improved hair growth in mice.

The document explains different hair and scalp conditions, including common hair loss after pregnancy or illness, drug-induced hair loss, hereditary excessive hair growth, patterned baldness, autoimmune hair loss, and permanent loss due to skin disease, with generally limited treatment options.

STAR particles can improve the effectiveness of topical hair growth treatments without causing skin irritation.

Sansevieria trifasciata P. extracts, especially the ethyl acetate fraction, effectively promote hair growth in male rabbits with hair loss.

Mimicking growth factors in a topical solution can prolong hair growth phase and reduce hair loss without side effects.

The herbal mixture Xiantene may help treat common baldness, and men who grey early tend to be less bald but more grey.

EGF controls hair growth by regulating hair follicles' growth phases.

Children's hair grows in different types from before birth through puberty, with growth rates and characteristics varying by age, sex, and race.

Chronic hair shedding may be caused by less variation in hair growth times and might stop on its own after several years.

The document concludes that while lab results for hair growth promotion are promising, human trials are needed and better testing methods should be developed.

Collagenase IV is crucial for hair growth by affecting key growth factors.

Thyroid hormone receptors are essential for hair growth and wound healing.

Hair count values should be standardized for each scalp region to evaluate hair disorders in Asians.

UV exposure causes hair thinning, graying, and changes in hair growth cycles in mice.

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

Human hair grows better in a special gel that mimics skin.

Low-intensity ultrasound may help protect hair follicles from chemotherapy-induced hair loss.

A specific gene mutation causes long hair in Angora rabbits.

Higher light doses cause more damage to hair follicles, predicting better hair removal results.

The document explains how hair is studied in forensics to identify its source and its role in criminal investigations.

EBF1 controls hair type and length.

Chromatin state changes in hair follicle stem cells can improve cashmere growth.