Lotions and powders reduce wear time and promote leaks. What is your wear time? It sounds like you have leakage around the stoma and open ulcers. You need Friars Balsam Compound Benzoin Tincture. It burns like fire on an open wound but not for long and it works. You apply with a Qtip. When it dries it is sticky and the wafer will stick to it. I get it from Canada. Someone else found it in California. It is made by Roguier Pharma. Phone number is 866-470-6886. Web www.rougier.com
100 ml bottle is about $35, but it goes a long way.