I had lot of acne when i was younger and my red marks were bad. This was at 20-22. My acne cleared up the next few year and now at 26, i broke out. Worst is the red/brown marks as a result of it and it doesn't seem to fade it all.
The glycolic acid cream i used back then use to work but now it doesn't work anymore. I'm thinking the older you get... the tougher it is for your skin to heal due to age?