Then I popped it in the oven at the hottest temp it would go and cooked for 30 minutes. I turned the oven off and left it in until it cooled.
That's it. This is great because some people have been complaining about the pen coming off in the dishwasher but I don't put my flower pots in the dishwasher all that often so it'll stay on. Yey! Zoe xx