I'd like to introduce you my favourite concealer Dream Lumi Touch Concealer by Maybellin which is among my most favourite cosmetics products.
So what's so great about this product? The main reason I love this so much is that I have a big dark circles under my eyes and this concealer helps to cover the biggest darkness under my eyes. I'm saying "the biggest darkness" because since my eye circles are so bit that no concealer can cover them completely. But it definitely is one of best concealer I've tried so far. And another great thing is that you use only a small amount of it so it lasts you a really long time. I've been having my Lumi Touch for half a year now and it's still not empty yet.
You can also use it to lighten your nose or other parts of your face, it's up to you. :)