I've never needed a concealer before really, but at 46yo, I had a sudden breakout of acne. Its now under control, but the redness is still there and my foundation isn't covering it. I also fear another breakout and want to be prepared!
I have pale skin and am useless with make-up so it would need to be something that goes on without much skill in the application. Bonus points if it works really well as an under eye concealer as my dark circles are horrific!