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The human scalp has different types of pigment cells in hair follicles with varying abilities to produce pigment.

Human skin can make serotonin and melatonin, which help protect and maintain it.

Hormones and genes affect hair growth and male baldness.

Agomelatine might help stop hair loss caused by valproate.

Indole-based compounds improved ovarian health in rats with PCOS, with L-Tryptophan and Tryptophol being most effective.

Alopecia X in dogs is a cosmetic issue, not a hormonal disorder, and harmful treatments should be avoided.

SARS-CoV-2, the virus causing COVID-19, can affect all endocrine organs and systems, altering their function and potentially leading to disorders. Factors like diabetes and obesity increase infection risk and severity. Understanding these effects is key for effective treatment.

α-MSH increases melanin production in moulting hair follicles, while AVT inhibits it.

Short photoperiods improve cashmere growth and quality in goats by changing hormone levels and gene expression.

Human hair follicles can produce cortisol like the body's stress response system.

Chronic stress can reduce skin pigmentation.

ATP increases melanin production in skin after UV exposure, with the P2X7 receptor being crucial for this process.

Dopamine stops hair growth and pigment production in human scalp hair follicles.

Palmitoyl tetrapeptide-20 may help reduce hair greying and increase melanin production.

Light affects skin health, aging, and cancer risk, and new light-based treatments and imaging are promising for skin care.

PDRN from salmon may slow skin aging by improving skin quality and reducing inflammation.

Scientists discovered a new way UVB light increases skin pigmentation through the ATP-P2X7 pathway.

Retinoids or their analogs could treat skin pigmentation disorders like melasma and vitiligo.

Brain hormones significantly affect hair color and could potentially be used to prevent or reverse grey hair.

Blocking prolactin increases the activity of secondary hair follicles in cashmere goats.

Hormones significantly affect hair growth and loss, with potential for new treatments.

Hair color is determined by melanin produced and transferred in hair follicles.

α-Mangostin can naturally lighten skin by reducing melanin.

Keratinocytes control how melanocytes work.

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

Hair color is determined by melanin types and gene activity.

Finasteride reduces melanin production in skin cells.

TRH in hair follicles can influence hair color by increasing melanin.

The conclusion suggests that focusing on certain cellular pathways may improve the prevention and repair of hair loss caused by radiotherapy.

A specific RNA helps increase the growth of skin cells in Liaoning cashmere goats by working with a protein to boost a growth-related gene.