Is rinsing their legs actually damaging?

I've never heard that rinsing a horse's leg is damaging. Water Therapy is a effective tool when you're trying to reduce swelling on a horse's leg. Ive had vets tell me this. Its great to rinse mud off the legs before applying boots because its not only uncomfortable for you're horse it, it can cause infections. but you want the leg to be dry when putting on boots as well. So rinse then dry(: hope this helps! btw Ive heard cold water is fine to use!!!