Saw it on TV back in the early to mid 90’s. Guy is killed/dies, but comes back as some kind of undead/monster. There may have been an entire society of people like this. Near the end, he wants to say goodbye to his girlfriend/sister/woman of importance, but can’t because she only sees him as a monster.
I’m reminded of Darkman, The Toxic Avenger, Swamp Thing, Spawn, and even some Batman villains. I’m not sure this is much help but you’ll at least enjoy checking some of these out. 🙂
Nightbreed (1990) fits all but the scene “near the end” that you describe.