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As people age, their hair follicles produce less pigment, leading to gray and white hair, due to factors like reduced enzyme activity and damage to melanocyte DNA.

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

Fetal hair follicles have melanocytes with melanosomes at different stages, which are broken down into pigment particles in keratinocytes.

New technique implants pigment in scalp with less pain and damage.

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

The gene Tfap2b is essential for creating a type of stem cell in zebrafish that can become different pigment cells.

The immune system can cause permanent skin and hair whitening by attacking pigment cells.

Patients with hair pigment loss and hair loss may have altered pantothenic acid metabolism.

Removing Dicer from pigment cells in newborn mice causes early hair graying and changes in cell migration molecules.

Hair follicle cells age faster and lose pigment due to less catalase, causing hair to turn gray.

Reducing Tyrosinase prevents mature color pigment cells from forming in mouse hair.

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

Sox2 controls hair color by affecting pigment production in hair follicles.

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

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

Certain genes control the color of human hair by affecting pigment production.

UV light can help stimulate the growth of new pigment cells from hair follicles in people with vitiligo.

Vitiligo is caused by the immune system attacking skin pigment cells.

A protein called sFRP4 from skin cells stops the development of pigment-producing cells in hair.

The scalp has a natural speckled pattern of increased pigment around hair follicles, possibly linked to local hormone production.

Stress can cause hair to turn gray by depleting pigment-producing cells through the release of a stress hormone.

Researchers successfully grew horse skin cells that produce pigment from hair follicle samples.

Scalp micropigmentation is a process where tiny dots of pigment are tattooed onto the scalp to create the appearance of a shaved head or fuller hair.

Hair graying is caused by the loss of pigment cells due to poor maintenance of stem cells in the hair follicle.

Melanogenesis inhibitors like kojic acid and niacinamide can reduce inflammation and pigment production in skin cells.

Using topical prostaglandin F2α for glaucoma may cause loss of eyelash or eyebrow pigment.

Lasers are effective for some skin conditions but can cause side effects like scarring and pigment changes; careful selection is important, and botulinum toxin type A is successful in reducing sweat in palmar hyperhidrosis.

Pregnant women often experience skin and hair changes, with over half getting stretch marks and pigment changes, and should be cautious with cosmetic procedures due to potential risks.

Some medications might reverse gray hair, especially those that reduce inflammation or stimulate pigment production, and vitamin B might help.

A man's chest hair turned white after a shingles infection, possibly due to virus-damaged pigment cells.