This is the Kryolan fixing spray, and it's supposed to make your makeup completely smudge-proof, waterproof and sweatproof. Obviously, to really put it to the test, I am going to be swimming ...

it’s wise to invest in a waterproof spray for boots too. If your boots already come with a Gore-Tex membrane or another waterproof layer, you're home and dry - there's no need to waterproof them.