I'm a 21 y/o M who has suffered from chest keloids since age 14 (due to acne). For the past 2 years I've been receiving kenalog injections approx. every month with pretty great results (flattening, less red, less pain etc.). However, I notice that towards the end of the month some regression occurs and the pain returns hence my need to continue with injections. My question is in regards to the efficacy of long term kenalog injections. Do they become less efficacious over time? Are they safe?