I have been using teosyal on my lips once a year since 2010. 2013 i went to another doct. and he used restylane. 2 months after I start to feel my lips sawlow and pain. he said it should be a bad reaction and inject cortisone. Repeat the treat. 2 times more + an antibiotic. Next time ialuronidase only in one side of the lip. After 2 days the side that he didn't put ialur. swallow. It was really big and hurts. Then he inject cortisone on this side. It has been 8 and the problem continues.