Well, I havent been on dilantin for quite as long as you have (35 yrs) but I do know that there are some things that I have to do now that I didnt before. First, I have to wash my face daily. Second, I have to use an anti-wrinkle cream. Other than that, I wish I could be of more help. I, too, look older than my age, but excessive exposure to the sun caused that.