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.
Towards the end of this resting (telogen) phase, the hair is shed and the follicle remains empty until the anagen phase of the cycle restarts. Pigment production also turns on and off in rhythm with the hair cycle. When pigment cells turn off at the end of one hair cycle and fail to turn back on with the onset of the next, hair becomes grey. Genetic factors appear to be important in determining when we turn grey.