Hi!
So I have an interesting skin/connective tissue condition that makes adhering the ostomy appliance to my skin extremely difficult. I have paper-thin skin with scars running every which way. I would suffer from "pancaking" if I used a bag with a filter, and the backed-up output would blast the bag off or cause an insidious leak. My skin was sloughing off each time the appliance was removed because my skin was absorbing the adhesive. It was awful.
Now, even with a malfunctioning colostomy, I can get a week or even more out of my appliances, and leaks are practically non-existent now. I have tried so many different products and systems, and what has worked for me may also give you a little relief. I hope. 🙏
I use a Coloplast appliance called SenSura Mio Flex in light convex (deep convex actually pulls away from my skin because they're so very rigid and my skin is very fluid), stoma powder only directly around the stoma or very lightly dusted onto any weeping areas. The trick to using stoma powder and having the appliance adhere fully is two-part. After applying your powder, you must seal it with a barrier liquid such as Cavilon, making sure to coat all skin, creases, etc. The other super important step is to make sure this layer is DRY by using a blow dryer on low-warm. My blow dryer is my best friend when it comes to ensuring a great seal with no leaks. Warm your appliance and your skin before placing the appliance on your prepped skin. The adhesive surface will react to the warmth and allow the skin to adhere more fully, down into the tiny imperfections. I also use a protective seal made by Coloplast that has been a complete game changer for appliance adherence. It's called Brava Protective Seal, and this one isn't thick and bulky. It's 3 inches across and very thin, so it doesn't add bulk underneath the appliance, but it does melt and mold to the skin surface as body heat reaches it, filling creases and sealing the appliance to the stoma. You can even tear a ring into pieces and use it as putty to fill in the scar line you mentioned. I take a piece and roll it into a thin "noodle" and press these into any deep scars or creases. Make sure not to overfill these areas. Warm it with the blow dryer after you fill the crease, and the material will melt into the imperfection, making a smoother surface for the appliance. You can fill the creases AND also use a full seal if you find that you need more coverage. I roll mine out with a small clay rolling pin to ensure there are no edges to create tiny air pockets for output to escape through.
One other thing that I have noticed with getting a good seal is that it seems that the appliance will pull away directly at the stoma edge, and this is usually where a leak will occur, so I kept trying different ways to get a good seal directly at the edge of the stoma. I figured out that for me, if I place the Brava Seal directly onto the appliance itself and make sure that the edge of the seal is 1/16th-1/8th inch away from the cut edge of the appliance, there is much less retraction directly around the stoma, and it also won't swell up and potentially cover the opening or choke the stoma. This allows the ring of stoma powder to do its job and gives more room for the hydrocolloidal adhesives to swell with fluid collection, reducing the pressure placed on the stoma itself.
I really do a lot of prep to make sure I don't have leaks. I warm each part with the blow dryer before I adhere anything. I prop the blow dryer up and set it to blow onto the appliance while I prep my skin. When it's time to place the seal onto the appliance, I make sure to warm the seal first, and then I place it down onto a hard surface and use a small clay rolling pin to flatten the edges so no creases are made in my skin because these tiny creases cause air to be trapped in tiny pockets around the appliance, and this is a way for output to escape, causing a leak. By reducing any edges, you will also reduce the leaks because your skin will be more fully adhered to the appliance. As I place the appliance, I have my blow dryer on to keep my skin and the appliance warm, and once it's placed, I warm all around the edges of the appliance and my skin for about 30 seconds. I cover the stoma so it doesn't get a blast of hot air, or you can do this after you adhere the bag to the appliance.
I've tried pastes, clays, various types of barrier rings, and extended wear items from many different manufacturers, and the products that I use now are the best that I have found to solve my issues. At one point, I was using a skin barrier sheet, a barrier ring, and paste to try to heal my ulcerated skin, and it just seemed to get worse, so I started testing every product I could get a sample of to see what would actually work for me.
Don't be shy about asking companies for sample products. They are happy to send samples and have wonderful ostomy nurses on hand to help answer questions and find solutions.
I hope you're able to find a good solution soon! Leaks blow 😮💨