Green tea, as you said, is rich in antioxidants which will help your skin to glow. Even it's weight loss property is only because of detoxification of the body, else it does not cause direct weight loss. So you may consume it, it will help you digest food better, not causing any weight loss if you don't have extra fat deposits.
Next Steps
Consuming it without honey or
sugar would be better as sweeteners are nothing but empty calories so avoid in food you can. However, adding them would also not cause any side-effect.
Health Tips
Add 3-4 coloured foods daily in your diet to get more antioxidants in natural ways, rather than adding those in your face packs!