I'm 38 years old, have a combo skin, oily t-zone and tendency to blemishes, usually hormonal. Not just that but when i got to the bottom of my skin and cleaned it well enough i discovered that I have redness in my skin, and was told its also acne, after short google search i found out its a mild rosacea. As a result of all those nice things i have acne scarring and redness. Fun. I started with glycolic acid from mad hippie and then glycolic acid from devita and the scarring was much better but the redness still is there, nope after approximately three weeks the scarring is much better and the redness is pinker, still not totally gone.
Reminder, You have to you sun protection in the morning.