This stuff is amazing and worth every penny. I got it during the buy one get one free special so I got 2 bottles. Not even half way done with the first and have been using it morning, noon, and night, daily. I used the blue ampoule it came with as well as the red one. I live in NYC and because of the humidity and horrible air in general my skin tends to habe issues. This has helped A LOT. With keeping the issues at bay and with fading the old scars.
It appears that after using this one for weeks it made my skin irritated because it's too fragrant.