So I got my Lola's magnetic Lashes - very exciting! Thought I'd be sensible and test it on my arm - drew a line on my arm with the eyeliner, let it dry 20-25 mins (nothing came off when I touched it) aaaaand nothing. The lashes barely stayed on. There was no magnetic pull like you see in the adverts. I'm so sad!! What did I do wrong? More layers of eyeliner? Leave it longer than 20 minutes?