This blog post may contain affiliate links. Please read disclaimer. The most efficient way to finish foundation? Apart from wearing it consistently, of course? Dropping the glass bottle on the bathroom tiles. And a great way to test the waterproof claims, too. How do I know that? Well, I did just that, a few weeks ago, when my bottle of Catrice 24 h Made to Stay makeup shattered on the tiles.     Just to be crystal clear: This is not the way I will be testing my foundations from…