There is a European edge “paint”/finisher brand called Giardini that works better than Fieblings’ EdgeKote. It’s expensive, and once you’ve used it a few times, even though it’s not used up, it becomes too thick and gunky. However, it comes in black, red and other colors. Refinishing leather edges is a process, one I actually learned by reading Giardini’s website and instructions. First, you have to remove the remnants of the old edge coating. You can use sandpaper for this, but I actually have found it quite handy to use a Dremel. It works much faster. The idea is you need to have the edge very smooth without any coating on it. Then, if you use Giardini, there’s a basecoat that has to go down first, then whatever color you’re using, and then there is a finishing coat. This is why Giardini is expensive, because you need to use all three. However, it looks nice when done. The applicator to use whether it’s Edge Kote by Fiebling or Giardini, is called a “ leather edge dye pen.” They cost seven or eight bucks and you can get them on
Amazon. They are tapered and come to a point at the end. They are cylindrical so that you can dip them into the edge coat substance and then carefully roll them onto the edge of the bag. it takes some practice to get it right. Take a look:
https://a.co/d/7zu7yOy
When I use Fiebling Edge Kote, I have to use several applications and layer it. You can’t put too much on at once, you need to put on a thin coat, let it dry, put another coat. Giardini is much thicker than EdgeKote and you don’t need more than two layers. I can’t remember because it’s been a while since I’ve used it but I think I’ve used two layers and not just a single layer.