• Derived from: soybean
  • Pronunciation: (\ˈsȯi-ˌbēn\)
  • Type: Natural

What Is Soybean oil?

Soybean oil is an oily substance derived from soybean plants. Soybean plants are part of the pea family, and its high-protein seeds are commonly eaten and used in many forms around the world.[1] The United States is the largest soybean producer in the world and is a leading exporter.[2] More than 80% of the American crop is grown in the upper Midwest.[3] Soybean oil is found in a variety of products, including cleaning products, bath products, makeup, shampoo and conditioners, and tanning products, among other things.[4]

What Does Soybean oil Do in Our products?

Soybean oil acts as an insect repellent in our products. Repellents are thought to jam or disturb the odor and/or taste receptors in mosquitos, causing them to become confused and fly away.[5] Soybean oil can also act as a moisturizer.[6,7] It is high in vitamin E and omega-6 fatty acids.[8,9]

Why Puracy Uses Soybean oil

We use soybean oil in our insect repellent. Studies have found that soybean oil-based repellents can protect against mosquito bites for one to several hours, depending on the formulation.[14,15,16] Soybean oil in Puracy products is produced and manufactured in the United States. It has not been grown with any type of wheat proteins. To the best of our knowledge, our RBD soybean oil is 100% derived from non-GMO soybeans. Although soybean oil contains phytoestrogens, which have been linked to endocrine disruption when consumed, when applied to skin, researchers have shown no such concern. In fact, more than one study suggests soy products may be beneficial to skin when applied topically.[17,18] The Cosmetic Ingredient Review has also deemed soybean oil safe for use in cosmetic products, and Whole Foods has deemed the ingredient acceptable in its body care quality standards.[19,20,21,22] Additionally, the EPA has listed soybean oil as an active ingredient that poses minimum risk to humans as a pesticide.[23,24]

How Soybean oil Is Made

Soybean oil is squeezed or extracted from the seeds of the glycine soja plant.[10] First, the harvested beans pass through aspirators to remove loose hulls and then through dryers to reduce their moisture content to approximately 10% to 11% by weight. The beans are tempered for one to five days to facilitate dehulling, after which they are cleaned and fed into rolls that break the beans. The beans are then heated to become pliable, then pressed into flakes that expose the oil cells. Using a solvent that later evaporates, the processor “washes” the oil from the soybean flakes. The resulting crude soybean oil then goes to a refiner.[11] A common method of refining soybean oil is by reacting it with an alkali solution that neutralizes the free fatty acids and reacts with the phosphatides. These reacted products and the proteinaceous materials are then removed by centrifuge. The oil is washed with water to remove residual soap, caused by saponification of small amounts of the triglycerides (oil). Color-producing substances such as carotenoids and chlorophyll are removed by a bleaching process that uses absorbents such as acid-activated clays. Volatile components are removed by deodorization, which uses steam injection under a high vacuum and temperature. The refined (or RBD — refined, bleached, deodorized) oil is then filtered and stored until used or transported.[12] Refining the soybean oil removes 99.99% of the allergens associated with soy.[13]



[1] U.S. National Library of Medicine
[2] U.S. Department of Agriculture
[3] U.S. Department of Agriculture
[4] Cosmeticsinfo.org
[5] U.S. Department of Agriculture
[6] Cargill
[7] Glenn Corporation
[8] U.S. National Library of Medicine
[9] U.S. National Library of Medicine
[10] Cosmeticsinfo.org
[11] Filter Specialists, Inc.
[12] Filter Specialists, Inc.
[13] Environmental Protection Agency
[14] Fradin, M.S. and Day, J.F., “Comparative efficacy of insect repellents against mosquito bites,” New England Journal of Medicine (2002). July 4; 347(1):13-8
[15] Barnard, D.R. and Xue, R.D., “Laboratory evaluation of mosquito repellents against Aedes albopictus, Culex nigripalpus, and Ochierotatus triseriatus (Diptera: Culicidae),” Journal of Medical Entomology (2004). July; 41(4):726-30
[16] Maia, M.F. and Moore, S., “Plant-based insect repellents: a review of their efficacy, development and testing,” Malaria Journal (2011) v. 10 (Suppl 1): S11
[17] Lin, J., et al., “Topical isoflavones provide effective photoprotection to skin,” Photodermatology, Photoimmunology & Photomedicine (2008). Vol. 24, 2, pp. 61-66
[18] Sudel, K., et. al, “Novel Aspects of Intrinsic and Extrinsic Aging of Human Skin: Beneficial Effects of Soy Extract,” Photochemistry and Photobiology (2005), 81(3):581-587
[19] Whole Foods Market
[20] Cosmeticsinfo.org
[21] Personal Care Council
[22] Personal Care Council
[23] Environmental Protection Agency
National Pesticide Information Center
[24] Environmental Protection Agency

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