It is observed that many car owners prefer using homemade rain repellent for windshields for its cost-effective and less toxic nature. For the ones who do not know, you can easily make a homemade rain repellent using everyday use ingredients. For instance, you can use distilled white vinegar, isopropyl alcohol, liquid dish soap, ethanol, castor oil, measuring cylinder, etc. There are simple formulas to make rain repellent at home that you can easily find on the internet. So, if you want an affordable solution to prevent rain, snow, or dirt away from your windshield glass and prevent toxicity as well, then make one at home instantly!