Phoenix-Mesa Gateway Airport (AZA) Log in to leave a tip here. They have a breast feeding room! Tiny, but cute family airport. AllegiantAir charges to print your boarding pass in person check in through their app 24 hrs prior and use the app to go through security.
As the hair is being formed, melanocytes inject pigment (melanin) into cells containing keratin. Keratin is the protein that makes up our hair, skin, and nails. Throughout the years, melanocyctes continue to inject pigment into the hairâs keratin, giving it a colorful hue. With age comes a reduction of melanin. The hair turns gray and eventually white.
As you age, melanin is reduced, which is why your hair turns gray and, ultimately, white (this means there's no melanin left). 2. Scientists Discover Gene Linked to Graying Hair. What exactly causes melanin to be reduced and hair to turn gray has remained a mystery, until now. An international team of researchers has discovered the first gene linked to gray hair.