Ladies and gentlemen, allow me to introduce you to your new favourite heavy-duty concealer. When it comes to dark circles, there is nothing Models Own Cover It Concealer (£9) won't cover up. The tube may be tiny, but this is a seriously thick, heavily pigmented product, and to say a little goes a long way is an understatement. It's lasted me ages, but it's something I'll definitely be repurchasing! — GC