First try I didn't believe WooWoo only had to be left on for 60 seconds before getting in the shower and then it would be done just 3-5 minutes after that, so I didn't follow the instructions and went with my usual hair removal cream method. What a surprise, it didn't work! So I had to reapply, which was VERY sensitive. I didn't use it again for a couple months, and then decided after a friend's recommendation to follow the instructions that I would brave it again. I don't think I'll ever go back - it really does work! Doesn't get rid of all the tiny, fine, fair hairs that waxing does, but those aren't visible anyway. Also I have very sensitive skin, and 95% of the time this does not sting. I'm now on my second 100ml tube and will be continuing to use WooWoo for the foreseeable!