When i shave my head there is a lot of grey where my hair was is there a way to remove that grey?

You could always dye your hair back to its original color...

When i shave my head there is a lot of grey where my hair was is there a way to remove that grey?

Are you talking about your skin being grey? If it's your skin that is grey the solution is simple... get some vitamin D! (That means spend some time in the sun, yes TAN your bare scalp!)

When i shave my head there is a lot of grey where my hair was is there a way to remove that grey?

The grey undertone is the result of the hairs under the skin showing through the transparant layer of the skin. This will diminish after the skin is exposed to the sun and pigment forms as a tan.

Jeff