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Hair grows faster in the morning and is more vulnerable to damage from radiation due to the internal clock in hair follicle cells.

Hair loss occurs due to fewer papillary cells, smaller follicles, and shorter growth phases.

Trichohyalin is a protein in hair follicles that helps form hair filaments.

Androgens have complex effects on hair growth, promoting it in some areas but causing hair loss in others, and our understanding of this is still evolving.

Thyroid hormones help hair grow, reduce hair loss, and increase hair pigment.

Different ethnic groups have unique hair growth patterns, with African hair growing slower and less dense, Asian hair growing fast but sparse, and Caucasian hair being densest; men are more likely to experience hair loss than women.

Minoxidil increases hair weight and count temporarily in men with hair loss.

Some drugs can cause skin, nail, and hair problems, which are important for healthcare professionals to recognize and report.

Tiny particles from stem cells help activate hair growth cells and encourage hair growth in mice without being toxic.

Applying a special compound can promote hair growth without harmful side effects.

Ruby laser pulses best destroy hair follicles during the growth phase and effectiveness varies with laser intensity; melanin is key for targeting, and timing treatments can improve results.

Thyroid hormone receptor β1 is found in human hair follicles and helps them survive.

Understanding the mouse hair cycle is crucial for cancer research.

Melatonin helps regulate hair growth and protects the hair follicle from stress.

Manipulating the catagen and telogen phases of hair growth could lead to treatments for hair disorders.

Hair color production is closely linked to the active growth phase of hair in mice and may also influence hair growth itself.

Analyzing trace elements in human hair is complex and needs a standardized method.

Green tea component EGCG could potentially promote human hair growth.

Trichohyalin makes hair follicles stronger.

The document concludes that hair is complex, with a detailed growth cycle, structure, and clinical importance, affecting various scientific and medical fields.

Researchers found that hair shedding happens mostly when new hair is growing and involves a unique process.

EGFR is essential for normal hair development and follicle differentiation.

We need more research to better understand human hair follicle stem cells for improved treatments for hair loss and skin cancer.

Lanceolate complexes in mouse hair follicles are essential for touch and depend on specific cells for maintenance and regeneration.

Alopecia areata is caused by immune system attacks on hair follicles, often triggered by viral infections.

The document concludes that assessing hair follicle damage due to cyclophosphamide in mice involves analyzing structural changes and suggests a scoring system for standardized evaluation.

Activating TRPV3 stops human hair growth.

Hair graying happens because certain cells aren't maintained properly.

MicroRNA-214 is important for skin and hair growth because it affects the Wnt pathway.

The document concludes that the hair cycle is a complex process involving growth, regression, and rest phases, regulated by various molecular signals.