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Gray hair is caused by reduced melanin production or transfer issues, linked to aging and possibly health conditions, with treatments focusing on color camouflage.

Cirsium japonicum flower extract increases melanin production and could help treat depigmentation conditions.

Melanin may help melanoma cells grow by aiding their metabolism.

Protocatechuic acid can reduce melanin production and boost antioxidant activity in hair follicles.

3D imaging of skin biopsies offers better accuracy but is time-consuming and can't clear melanin.

The study found that giant pandas have more melanin in black hair follicles than white, with gene expression differences that could affect hair color and skin health.

CD34+ hair follicle stem cells can become melanin-producing cells for treating skin conditions.

Poliosis causes white hair patches due to lack of melanin.

Melanocytes produce melanin; their defects cause vitiligo and hair graying, with treatments available for vitiligo.

Reflectance spectroscopy can noninvasively track hair growth stages by measuring skin reflectance and melanin changes.

Hair color is determined by melanin and can be affected by genetic conditions like albinism.

Retinoids can help treat skin pigmentation disorders by affecting melanin production.

Safflower extract increases melanin production in certain skin cells without harming them.

Hair with more melanin resists weather damage better.

Tribuloside can increase skin pigmentation by enhancing melanin production and distribution.

Rose stem cell nanoparticles improve skin quality by boosting collagen, aiding cell movement, reducing melanin, and lowering inflammation.

The herbal extract SHJ promotes hair growth and increases melanin production.

Melanin granules can be expelled by exocytosis.

BMP signaling is important for skin color, affecting melanin production, pigment spread, and cell movement.

UK medical students lack dermatology education, liver biopsy patients with risk factors show more fibrosis, and certain fungi resist drugs due to melanin; genetics may influence female hair loss.

Melanocyte stem cells in hair follicles are key for hair color and could help treat greying and pigment disorders.

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

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

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

Low fluence photoepilation temporarily removes hair by targeting the hair follicle's pigmented area without severe damage.

A reliable system was developed to distinguish hair growth stages, aiding in identifying hair growth promoters or inhibitors.

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

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

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.

New genetic locations explain much of hair color variation in Europeans.