Hey Maxime, I'm actually trying to do the leaving alone method again. I'm about a month into it, lips are still building up but it seems like they aren't building up as much as before. It's still too early to comment but the key to this is to let the crust or whatever fall off on it's own. Don't peel it off by force. Not too long ago someone posted an old thread by a person named monsterlips i believe? Try and find that thread and read all of monsterlips posts.