Did some quick research and here is what I found.
Styptic powder causes the vessels to contract further back into the claw and also clots the blood. Not only does styptic powder control the bleeding of over-trimmed nails, it helps prevent bacteria from the surrounding area entering the blood stream. This particular first aid agent is not only useful for accidents while trimming dogs and cats’ nails, but also birds’ beaks. Veterinarians use styptic powder to control bleeding of other external injuries as well.
If that is true and it helps prevent bacteria then I guess it would be best to always use it.








