DMSO isn't too hard to apply... just bring a proper cotton wrap, syran/plastic wrap and some sort of wrap to wrap around it. I used a pair of rubber gloves as well and my farrier told me to use a clean toothbrush to apply it... it worked well and I never managed to get it on myself either. He told me I could expect some fuss about the first application since sometimes it causes sensations in their legs but Indie didn't mind at all, however, he said it was likely that she had DMSO put on before in her racing days.
Basically, you just need to put a thin application on the entire area that's showing signs of swelling and once it's on, you put the cotton wrap (or no bow as I think you said you bought) around it. Then, you put the syran/plastic wrap around that before applying the final bandage/wrap to keep it all together. Also, I'm sure the vet told you use, but sometimes the DMSO will change states and generally, you want it in a more liquid form so putting it in hot water for a few minutes will help with that. :)
Forever loved, never forgotten; my beautiful Indie. <3 Hoofprints on my heart.