Zinc oxide
"I have some facial scar tissue from a dog bite and it is generally looks reddish. I also have allergies to fragrances and I have very sensitive skin. A friend suggested that I try zinc oxide to reduce the redness and it has worked tremendously for me.  I use it around my nose and chin area and I thing the scar tissue looks minimal and the redness is much less.  I am using it nightly now."