Where I live, an average day in the summer has a temperature over 100 degrees, so heat proof makeup is kind of my specialty. The first tip I always tell anyone who asks how to make their makeup heat proof, is that there really is no way to make your makeup completely heat proof, but there are a few things you can do to help your makeup beat the heat. First off, you need to use primer on both your face and eyes. This will help both the longevity of your makeup and give your foundation and eye shadow something to stick to. Next, you must powder and set your foundation, concealer, and any liquid products you used on your face. This step will keep your makeup from easily sliding and rubbing off your face. I think one of the most important steps to take is to wear waterproof mascara. The last thing anyone wants is for their mascara to be running down their face. Lastly, the step that holds everything together is a setting spray. I recommend the Urban Decay All Nighter Setting Spray. Adding these few steps to your makeup routine during the hot summer days will definitely help to heat proof your makeup, so go ahead and have as much fun in the sun as you would like!