The topic is about the Dermacol Stoma Collar, an innovative product from Salts Healthcare designed to prevent leaks and protect the skin around a stoma. This collar aims to create a secure barrier at the base of the stoma, offering a comfortable and effective solution for ostomy care. Here are some key points and helpful insights about the Dermacol Stoma Collar:

- The collar is made from Alphathane polyurethane and features a high-tack, soft hydrocolloid washer, ensuring a snug fit.
- After a three-year user study, the collar height was chosen to stretch up to three times its diameter, accommodating peristalsis and mild ovality. However, it is not suitable for retracted stomas.
- There are two ways to apply the collar: either attach it to the skin first and then the pouch, or fix it to the pouch/flange first and then fit it over the stoma. It is compatible with both one-piece and two-piece systems.
- The collar includes a clear release film with a thumb tab for easy removal, which comes off when changing the pouch.
- While primarily marketed in the U.K., Salts Healthcare offers worldwide shipping or distribution through local branches.

Advice and insights from users include:

1. Many users find the Dermacol collars more effective and comfortable than pastes or barrier strips, with some reporting they remain leak-free for several days.
2. For oval stomas, rolling the top edge down can shorten the collar for a snugger fit. Adding a thin layer of paste inside the collar can help fill gaps, allowing for about three days of wear before needing a change.
3. The collar's effectiveness varies depending on how far the stoma protrudes. Some users who cannot tolerate rings found Dermacol unsuitable, while others compare its popularity to products from Hollister and Dansac.
4. For shallow or retracted stomas, alternative products include:
- Coloplast shallow one-piece convex base plate, which helps push the stoma outward.
- Eakin Slims moldable seals, offering a softer option for sensitive skin.
- Secureplaste seals from Salts, which provide longer wear time.
5. Availability outside the U.K.:
- In Canada, the complete Salts product line, including Dermacol, is distributed by Argyle Medical in Montreal.
- In Australia, Dermacol (sizes DC28, DC29) has been available for several months and is gaining popularity.
6. Convatec has introduced a similar leak-prevention collar, though specific details are not provided.
7. General guidance suggests trying multiple systems—such as pastes, rings, convex wafers, and collars—to find the best combination for skin protection, especially when dealing with allergies or hernias.