skin cancer on face and chest

I started with Efudex on Dec 23/25 on my cheeks. I apply the cream twice a day for 2-3 weeks. I applied it for 3 weeks. I am now into recovery period. So I have now started on January 17/26 applying Efudex cream to my upper chest. Well my chest is showing a way more reaction than my cheeks did. What I am wondering is just how long will my cheeks stay this rosy red color? I know we all are different and the healing time will vary but I think we will all be within a few days of each other.
Look forward to hearing from you.
Bev G