I received my stoma 5 years ago and what has worked for me, since my skin is sensitive to all things that stick to my body, I use "No Sting Barrier Film". A few years ago I started to have the irritation. Figuring I was not cleaning the skin under the one piece pouch, I got out the "No-Rinse Foaming Body Wash", I was given when I was in the hospital. It works, I do rinse the Body Wash off. I also noticed that the tape was not sticking, which means I was not holding the pouch in place long enough (3-5 minutes) for the tape to "mold" to my body. If you do not have "hot" hands just use the hairdryer. If that fails try the rings, 3-5 days is a normal time for a pouch change. I have also found out that how many showers you take can tell you how often the pouch needs to be changed. (Water gets under the tape.) If you have hair under the tape you may want to remove it or if you sweat a lot these can cause the tape not to stick so the pouch has to be changed more often. At one time almost all Ostomy Nurses had an ostomy, now more people are going into the field. If you can, ask for an ostomy patient/nurse. I hope this info can help. Good Luck.
mlmcg