Hii. Tell me green tea remove tanning from skin and clear my face colour?

Try it! The benefits of green tea are not well defined or well documented. It contains some antioxidents but whether they can cure any condition like excess of pigment in your skin are doubtful. But it does not hurt to try it and find out!
No it doesn't. Green tea contains egcg which is a potent antioxidant, useful to reduce oxygen free radicals which causes damage when skin is exposed to uv. Tanning is a response to uva exposure as a protective mechanism. The loss of tan is a slow physiologic removal of the extra pigment. Egcg will not remove the pigmentation.