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Exosomes from dermal papilla cells help hair growth by making hair follicle stem cells multiply and change.

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

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.

Chemotherapy can cause hair changes similar to alopecia areata, which might lead to misdiagnosis.

Different hair growth problems are caused by genetic issues or changes in hair growth cycles, and new treatments are being developed.

Crataegus pinnatifida extract may help increase hair growth and thickness in mice.

Chemotherapy caused hair loss with specific patterns, but most patients had hair regrowth after treatment, while some had lasting hair loss.

Spironolactone may help reduce hair loss in androgenic alopecia.

COVID-19 may cause hair loss and scalp pain due to inflammation and changes in hair follicle receptors, but these symptoms typically resolve in 2 to 4 months.

Hair growth is influenced by hormones and goes through different phases; androgens can both promote and inhibit hair growth depending on the body area.

The document concludes that hair biology is complex and there are still unanswered questions about hair loss and follicle changes.

SA linked to mitochondrial issues and oxidative stress, while AGA involves disrupted hair growth genes.

A woman had temporary hair loss after a facelift, which improved on its own within a year.

Gamma-ray exposure can cause long-lasting damage to hair follicles, affecting hair structure and color.

Micrografts and minigrafts for hair restoration provide high patient satisfaction and can cover large areas of hair loss, including sideburns, eyebrows, and beards.

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

Dermal papilla microtissues could be useful for initial hair growth drug testing.

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

Minoxidil and spironolactone slow hair loss in women.

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.

Melatonin affects certain genes and pathways involved in cashmere goat hair growth.

Melatonin can increase cashmere yield by altering gene expression and restarting the growth cycle early.

A scalp biopsy revealed systemic amyloidosis in a woman who initially seemed to have a common hair loss condition.

Low-level light therapy, possibly combined with other treatments, may become a leading hair loss treatment, while hirsutism often worsens with age and lacks preventive options.

Understanding hair structure and growth is key for diagnosing hair diseases accurately.

Some botanical products may help increase hair growth in people with alopecia, but more research is needed.

Lichen sclerosus et atrophicus is generally not considered precancerous, but there are exceptions.

Avicennia marina extract and avicequinone C can potentially promote hair growth and treat hair loss by interfering with hair loss mechanisms and boosting growth factors.

Hair growth phase and certain genes can speed up wound healing, while an inflammatory mediator can slow down new hair growth after a wound. Understanding these factors can improve tissue regeneration during wound healing.

β-catenin in the dermal papilla is crucial for normal hair growth and repair.