This was taken from a book called the fragrant pharmacy and is a must for any aromatherapist <3
Okay take a simple 1 litre bottle of water.
Next add 8 tea spoons of sugar, giving the bottle a shake next add half a tea spoon of salt and give the bottle another shake. Next add 8 drops of lemon essential oil and shake again.
Here you go a very simple yet effective bottle to keep you hydrated I find adding a drop of lime essential oil is also nice =D
I guess you could do this with an actual lemon and lime... But essential oils are the utter most of the fruit <3