How long before jumping back in the water??

At a pool party, how long do we make the kids wait after receiving their glitter tattoo before jumping back in the water?

I really want these tattoos to last and last, and I spend a lot of time on proper prep of the skin, etc.

What's a decent length of time? What has been your experience at actual pool parties?

THANKS!!

Also, when it says an expiration date on a bottle of Prosaide, what exactly does that mean? I have a small amount left that "expires" in August 2012, yet when I use it on myself to apply GTs, they look and last just fine. Is there anything really meant about an expiration date, or is it just something required to be on the bottle?

I've searched this site extensively, using every water term available, and can't really find anything specific on my question above.

Can somebody help me with this? All you glitter-tastic souls?

Please???

We ask the kids to wait 5 mins before getting in the pool but we live in an area where it is over 100 degrees so things dry quickly. We currently use Y body pink glue for pool parties with little kids (they soak in the water forever) but I say just do an experiment with your glue - put on a tattoo after 5 min soak in water and see if you need to wait longer.

Really I use all the brands but find every brand is different, every glitter is different and every kid's skin in different (I have one employee who we can't get any tattoo to stay on for more than a couple of hours)