I had a revision upper bleph 10 months ago. Since I experienced bad scarring the revision doc used 5 fu, I had a total of two injections. One two months post op and one three months post op. We definitely made improvement and interestingly enough I also did micro needling with a permanent makeup artist who specializes in using a safe hand tool called "soft tap" further reducing the scar. I am curious, Is it safe to have a third &final 5fu injection to the scar?