In general, I couldn't notice any red marks. I generally scratched pretty darn hard, but the marks would face in a minute or so, same as usual. And I'm pretty fair, so it would be easy to see. Of course, I have other red splotches here and there, but they don't necessarily itch. By the way, I still do have a bit of itching but it isn't crazy like before.
So you are itchy too? Good to know...