I asked the same question about 2 weeks ago. I stopped using MTG 1 week before my touch up and it's best to stop the usage 1-2 weeks before doing so. I was burning very badly around my edges and it's soley from my MTG usage, I know that you might not want to stop using the product. But you're taking a huge risk if you don't. I've never burned so badly before using MTG, next time I will stop usage 2 weeks prior to prevent the pain. If you don't stop using MTG, I want you to post and let me know if you were cool or not.