What percentage vol of alcohol dehydrates?

Question

We all know alcohol dehydrates the body. But how much alcohol by percent volume does it take to cancel out the water in a drink?

For instance if I drink a litre of water. How much alcohol would need to be added to it so that my body lost more than a litre of water?

Answer 1

a 1:1 ratio will help flush it out of your system and lessen effects of hangover (if you get them)

Answer 2

If your a drinker...drink water 12 oz between beer or whatever, every two. if you don't, and try to catch up after the fact, your body won't absorb.