Experts explain whether it's possible to reverse gray hair color permanently using methods like hair products and vitamins.

When skin cells responsible for pigmentation are exposed to estrogen or progesterone, the cells respond by adjusting their melanin production, resulting in either skin darkening or lightening.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." At a recent dinner, my friends and I started splitting hairs. One friend regaled us about a dream she had ...

The three main forms of melanin in our body are pheomelanin, eumelanin, and neuromelanin. This pigment is synthesized in the human body by melanocyte cells and consists of numerous polymeric compounds ...

The skin, hair and eye color of more than eight billion humans is determined by the light-absorbing pigment known as melanin. An article recently published in the journal Science features research ...

Hair turning gray is a natural phenomenon that accompanies aging for most people. It is a visible sign of getting older, but have you ever wondered what really causes this transformation? When hair ...

This is a preview. Log in through your library . Abstract Opsins form a family of light-activated, retinal-dependent, G protein-coupled receptors (GPCRs) that serve a multitude of visual and nonvisual ...