Hii..can you tell me green tea is useful for body and skin?

It is neither good nor harmful. Take green tea if you like the taste. Do not expect medicinal or cosmetic benefits. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Get HPV and Covid vaccines. Wish you good health!