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

Hair analysis can somewhat track past testosterone levels but is influenced by factors like hair washing, growth rate, sex, and hair color.

Caffeine can protect scalp hair follicles from damage caused by UV radiation.

A pregnant woman's skin condition improved after giving birth, possibly due to high estrogen levels during pregnancy.

The study found markers indicating that cells responsible for hair color are differentiating in specific areas of the hair follicle.

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

Hair follicles increase hair cortisol levels, so consistent hair collection methods are important.

Vitamin D and zinc may help treat alopecia areata.

Patients on long-term hemodialysis often have skin problems related to their treatment.

Certain gene variations and different levels of BDNF and CRH hormones are linked to vitiligo.

Women losing hair might have lower levels of vitamin D.

SLC45A2 and GPNMB genes help control chicken feather color by promoting melanin.

Pediatric alopecia areata is more immune-active than adult cases, suggesting age-specific treatments and potential use of JAK inhibitors.

Collagen, curcumin, and glutathione can improve skin health in aging women with low estrogen.

Telogen effluvium is linked to deficiencies in iron, vitamin B12, and thyroid function.

FOXN1 gene variants cause low T cells and immune issues from birth.

Increased pigmentation may protect skin from UVB, new targets for skin disease treatments were identified, sunscreen ingredients don't affect hormones, TNF-α inhibitors may help diabetic wounds, and certain treatments could prevent chemotherapy-induced hair loss.

Hair color is due to active pigment cells in hair during growth.

Hair color is determined by melanins produced in hair cells.

COVID-19 may harm male fertility by affecting sperm production.

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

Darker skin provides more protection against UV damage and cancer.

Sheep exosomes can enhance hair growth in mice.

Homemade hair treatments can significantly lower drug levels in hair, possibly causing false-negative drug tests.

A new molecule was found to be a safe and effective skin lightener and anti-aging product.

Wharton's jelly secretomes are best for promoting blood vessel growth.

Overexpression of COX-2 causes early hair loss in mice, but can be prevented with a COX-2 inhibitor.

The combination therapy significantly improved Riehl’s melanosis in patients without serious side effects.

Dihydrotestosterone can be made from dehydroepiandrosterone in skin cells without needing testosterone.

Dutasteride protects dopamine neurons in Parkinson's mice, but Finasteride doesn't.