When you find yourself trying to remember a show (or any works) that's on the tip of your tongue but just out of reach, come here - the collective brain of the TVTropes community can probably help. Post all the details you can remember (examples help). If you're looking for a trope, head over to Trope Finder. Have general questions about tropes? Visit Ask The Tropers!
When I hear "in contact with water" and "they're living with someone", I think of Ranma One Half, but vials don't figure in, and while there is a supporting cast of Chinese characters, they all have punny names based on English words.
For what it's worth, I've also heard of a manga called Shaolin Sisters, but I know nothing about it.
Edited by UltramarineAlizarin

I say anime, but it's really manga. I have been trying to find this one for YEARS. The only thing I remember about this manga is that it has chinese names, and there are magical vials around their neck, and I think when they are in contact with water, two characters shrink to chibi sized. (They're living with someone too)
PLEASE HELP