does vitamin c powder have caffeine?

Not if it is sold as pure vitamin c powder.

I have not heard of vitamin c being sold with caffeine.

Check the label.

You find caffeine in some skin care products as it is said to offer some benefit for the skin such as for under the eye dark circle reduction. Cooled green tea bags could be used instead for that....after cleansing/washing you can dab them on the face as a whole as the antioxidants will benefit the skin.

Peace.

Vitamin C powder just contains Vitamin C

If caffeine has been added then it should say so on the label

No. Vitamin C is just vitamin C. Vitamin C DOES work in an uplifting way, however, if that was your question. It uplifts, but without the bad effects of caffeine.

No, it does not.