I would just like to say, nothing worked for my hen either. Before you do anything please read through my post.
I found my hen with a very bad prolapse. All the gross stuff, huge, disgusting. I separated her from the flock, cleaned her vent several times a day, used honey, oil, tried to keep it moist, etc. I shoved her stuff in continuously, tried to hold it in, nothing worked. It never stayed ( you can see pictures of mine somewhere on here). Eventually, I started to notice a black ring around where the vent was coming out. I was sure this was dying tissue. And she stunk. All the while, she was alert, eating, pooping, and still laying eggs. I finally decided it was time to put her out of her misery (though she didnt seem to be in any misery, she was as happy acting as ever) I asked my husband to cull her, and he didnt want to, so we procrastinated over a couple of days, trying to figure out what the best way to do it was. He finally talked me into putting her back with the flock. She was acting totally healthy other than her vent. He said if she started getting picked on, weak, whatever, we would kill her. So I put her back in, and watched her every day. She was fine. She was getting along fine, nobody bothered her or her vent. Several days went by and I checked her vent to see if it was getting any worse, and it had gone back in. There is no gross stuff coming out, she is STILL fine, and laying eggs. You wouldnt know there was anything different from the rest of the hens. I know that it is possible that it will happen again, but I am so glad I didnt kill her. Really, she is fine, I watch her extra close and she is doing well.
Im not saying this is what you should do, because I dont know the condition of your bird otherwise, mine appeared totally healthy through the whole prolapse. I just want you to know the outcome of my situation. Its now been about a month since I think the prolapse first began.
edited to add that when I put her back in with the flock, I stopped treating her completely.
