I dont crust anymore it is silly too. If use saliva it will diolve any buidup just lick it off. Why not take serious? I only try to heal lips and have tried difference things. Tried water only for 6 monthes and it stopped all crust but but then i try saliva and chapstick and found cure i know troll ok?? Poor guy cotton just dont be scare of using what god gave you saliva it your mouth ok? I not post alot but occasion