I also found it quite hard to blend, the Beautifully matte primer is the same in that if it isn't blended properly and you apply foundation you end up looking like you have toothpaste splattered on your face - not a good look.
I don't really like writing negative reviews but I think sometimes they're helpful. This is not something I'd recommend to anyone with redness, I just didn't find it worked at all. Sorry No7!
Has anyone else had problems using this? Any other colour correcting primers I should try?
Thanks for reading :)