Re: red marks
yes, I actually had a smiliar problem.
if it is in fact caused by.. uh.. leg chaffing lets call it, I found what works best is in fact baby powder, as it lets my legs.. glide against each other if you will.
also sometimes ganing alot or losing weight can cause stretch marks, which look somewhat like you described. But without seeing your marks it would be hard for me to tell.
Give the baby powder a shot
if it doesnt work
another thing that worked for me
was pure aloe vera lotion
I still use the stuff once and awhile, if its hot out, to prevent them from coming back.