One of the most annoying aspects of colder weather is all the extra work it means for those driving. Between installing winter tires, scraping snow and ice, and waiting for your vehicle to warm up, everything takes a little longer. And while not as many people make the daily commute, that doesn’t mean everyone is immune to the dreaded feeling of starting the car and realizing your windshield is completely fogged up. But if you find yourself in this situation, it’s not as bad as it seems: A former NASA engineer has shared his science-based defogging technique, designed to get the job done faster. Here’s what you need to know.

This tip comes from Mark Rober, a former NASA engineer and self-described “friend of science.” In a five-minute YouTube video, he walks us through his four-step method for defogging your windshield in half the time. (Note: the title of the video below says he’ll be talking about defrosting windows, but in the video itself, he only addresses defogging.)

In the video, Rober uses the scientific method to test different techniques before choosing the one he believes works best to defog your windshield and car windows. Here are the steps involved:

Turn your car heater on full blast. Warm air can hold more moisture.