I've been using Differin for a few months as well and have some annoying scars... I tried the aspirin mask with honey and it works great as a scrub to give my face a nice glow and gets rid of the dull dead skin, which will eventually remove the scars while making your skin look really fresh. Just make sure you follow with a moisturizer. For a spot treatment, definitely try Aveeno's clear complexion correcting treatment, (it says it's clinically proven to visibly reduce blemish marks) and has helped for me and feels really nice. I haven't used the lemon juice but it sounds like something I might give a try too.