About a year ago, I dissolved hyaluronic acid injectetion on my lips. everything was fine, but after 2-3 months, I decided to get a refill. After the injection, I developed a white pimple on the inside of my bottom lip. My doctor suggested that it might be due to too much gel .three different doctors attempted to treat the pimple with laser treatment,and used needles to pierce the area but with no success. Two months ago, I opted for surgical removal of the pimple. but the problem has returned.