2007-12-29 02:19:49 · 8 answers · asked by Anonymous in Entertainment & Music ➔ Polls & Surveys
Here you go DC*
Lighly complected though they are, the palms of our hands (and soles of our feet) tan slightly when exposed to the sun. But these areas of our bodies never become as dark as our shoulders, for instance, regardless of the amount of light they receive. Cells in the epidermal layer of our skin produce melanin, which colors complexion and protects against UV rays. Increased sun exposure stimulates these cells, called melanocytes, to step up the production of melanin and darken the skin.
The thick layer of dead skin that covers the undersides of feet and hands reduces the amount of UV light that penetrates to the living layers beneath. Rays that make it through find fewer melanocytes to stimulate. And the sparsely populated cells they do find distribute melanin less uniformly, giving the skin a lighter appearance than other areas"
2007-12-30 00:32:50 · answer #1 · answered by Me 7 · 2⤊ 0⤋
Not enough pigment to tan.
2007-12-29 02:23:04 · answer #2 · answered by thresher 7 · 0⤊ 0⤋
No hair follicles, or tan pigment.
2007-12-29 02:24:01 · answer #3 · answered by Eleni 4 · 0⤊ 0⤋
Because your hands are always turned down away from the sun.
2007-12-29 02:22:16 · answer #4 · answered by 'Old & Cudley' 7 · 0⤊ 0⤋
B/C of the amount of pigment in the skin there.
2007-12-29 02:23:52 · answer #5 · answered by maryfran 3 · 0⤊ 0⤋
because there are no brown pigmentations cells on your palm...
2007-12-29 02:22:19 · answer #6 · answered by cRedible!!! 5 · 1⤊ 0⤋
There is no melanin. Melanin is responsible for tanning and skin color.
2007-12-29 02:24:23 · answer #7 · answered by That Girl 3 · 1⤊ 0⤋
Because I never tried.
2007-12-29 02:21:41 · answer #8 · answered by simmtalker 3 · 1⤊ 0⤋