>>11346789>>laseris just for aiming. They're measuring emitted IR radiation. In order to decrease emitted IR you need to decrease the emissivity of your skin. What this means is that you need to cover your face with silvery metallic paint. Applying a coating of incredibly white titania based paint might work marginally well. But that'd make you creepy white. Titania sunscreen might offer some benefit though. Really titania is just the first thing that comes to mind that's not metallic shiny and as probably being low emissivity, but I don't feel arsed to look it up. Now you could probably do some exotic microparticle engineering to produce makeup that has a low emissivity in the IR range, but looks like human skin.
