Science, Tech, Math › Science Natural Mosquito Repellent Recipe How to Make Natural Mosquito Repellent Share Flipboard Email Print MedicalRF.com / Getty Images Science Chemistry Chemistry In Everyday Life Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated January 31, 2018 It's easy to make your own natural mosquito repellent. You can control exactly what goes into the product so you won't need to worry about any unwanted chemicals. Natural Mosquito Repellent Safety There are a couple of different formulations you can use for your natural mosquito repellent. In general, what you are doing is diluting an essential oil that the mosquitoes find distasteful or which confuses them so they can't find you to bite you. The oils don't mix with water, so you'll need to add them to other oils or to alcohol. It's important to use an oil or alcohol that is safe for your skin. Also, don't go overboard with the essential oils. The oils are potent and could cause skin irritation or another reaction if you use too much. If you are pregnant or nursing, do not use any mosquito repellent, natural or otherwise, until after you've gotten it cleared by your physician. Natural Mosquito Repellent Ingredients If you are making large amounts of mosquito repellent, a good rule of thumb is to mix the repellent so it's 5-10% essential oil. That means you should mix one part essential oil with 10-20 parts carrier oil or alcohol. For a smaller batch use: 10-25 drops (total) of essential oils2 tablespoons of a carrier oil or alcohol The essential oils that work well against mosquitoes are: cinnamon oillemon eucalyptus oilcitronella oilcastor oil Safe carrier oils and alcohols include: olive oilsunflower oilany other cooking oilwitch hazelvodka Natural Mosquito Repellent Recipe Mix the essential oil with the carrier oil or alcohol. Rub or spray the natural insect repellent onto skin or clothing, using care to avoid the sensitive eye area. You'll need to re-apply the natural product after about an hour or after swimming or exercise. Unused natural insect repellent may be stored in a dark bottle, away from heat or sunlight.