I am going on a swimming trip soon and i have a noticeable scar/mole thing on the centre of my nose so i bought the concealer rimmel hide the blemish which is NOT waterproof however because we have a swiming trip soon i tested it out by dunking my head in the sink and NO concealer came off then i had a shower and NO concealer came off but its NOT waterproof ???????

I don't understand your question, in spite of the million question marks.

well it prob wont come off unless u rub it... it prob does that because most makeup had oil in it, so that makes it not come off untill u rub it