Blackhead control, do u just use it with a cotton wool, u dont have u rise ur face after do u?

i never used it before and it does not say at the back about using water... lolBlackhead control, do u just use it with a cotton wool, u dont have u rise ur face after do u?
I used to use 'Clean %26amp; Clear Blackhead Clearing Cleanser' (bit ov a mouthful) n i just used cotton wool and never rinsed it off. I don't think it made much difference though, to be honest.Blackhead control, do u just use it with a cotton wool, u dont have u rise ur face after do u?
I expect you leave it on, otherwise it wouldn't work if you rinsed it off immediately after. It wouldn't do any harm if you left it on and weren't supposed to anyway, they'd make it clear on the labelling if it was harmful to leave on