Hi there and thanks for your question.
This will be hard to answer without actually seeing your cats, but from what you have described it sounds like the cats may have been fighting.
Keep an eye on the areas for signs of infection. You will know if they are infected if you see redness that is getting worse or swelling. If their appetites start to be affected this is a possible sign of infection as well.
So as long as things seem to be healing well I wouldn't be too worried. I also wouldn't bother with any creams or washes at all as these don't tend to be terribly effective. If you think the area is becoming infected then a vet visit is in order.
I hope this information helps! If you have more questions regarding this problem, just hit reply. If I am online I will respond right away. Otherwise I will respond as soon as I come online again. Or, if my answer is sufficient, then please hit accept. Thanks!
Dr. Marie.
The above is given for information only. Although I am a licensed veterinarian, I cannot legally prescribe medicines or diagnose your pet's condition without performing a physical exam. If you have concerns about your pet I would highly advise contacting your regular veterinarian.
Veterinarian
Compassionate licensed veterinarian with >20 years experience with cats, dogs and pocket pets