I promised to report back on the progress and I feel I've given it enough of a trial now to be able to let you know how I got on with it.
I actually really like this - it's nice and light so it sinks in well, which is great as I put it on just before I go to bed (it is a night lotion after all!). It smells quite strongly of Tea Tree, which I don't mind and tingles a little when applied. This always makes me feel like a product is really working, so I was happy with that feeling - it doesn't last long either.
It took a little while, but I think it really has made a difference to post blemish marks. They seem less noticeable and are much easier to cover up - tinted moisturiser seems to be enough!
I'd recommend this if you you have a few post blemish marks, but nothing too serious as I don't know how well it would perform on those. It's worked really well on my skin though.
I think its also been helping to keep blemishes at bay and has helped to reduce the redness of any that have appeared. A multi tasking product - wonderful!
Grace