Since the beginning of the AIDS crisis in the 1980s, members of the medical profession diligently wear latex gloves as they do scrubs. Health care workers noticed more and more how the material irritated their skin and developed latex allergies with this increased use of protective wear.

Latex allergies are marked by itchy eyes, sneezing, coughing, rash, chest tightness, shock and even life-threatening illness. Health care providers with a latex allergy struggled for a compromise. With the gloves they were uncomfortable, possibly even ill, and without the gloves they were at a higher risk of contracting HIV. The solution: Using natural rubber latex that is hypoallergenic.

Most natural rubber latex is derived from the para rubber tree, which is commonly referred to as hevea. Hevea is grown in tropical climates, and because of this hevea often absorbs a variety of tropical proteins. These proteins are the cause of latex allergies. Therefore, hevea, the world’s most common source of rubber, cannot be used to produce hypoallergenic latex.

Derived from petroleum, synthetic rubber is commonly used to produce hypoallergenic rubber. But with a demand for a natural and environmentally-friendly alternative and rising oil prices, manufacturers took another look at the plant guayule. Guayule, which grows in northern Mexico and the southwest region of the United States, is a natural source for hypoallergenic rubber because it doesn’t contain any of the tropical proteins found in hevea.

Guayule’s use as a source for hypoallergenic natural rubber is important-nearly 10 percent of the population has a hevea-based latex allergic reaction. But the guayule plant is more than just a hypoallergenic latex source-it’s also a cash crop excellent for arid regions. It’s so sturdy that it can grow successfully in the desert, and it doesn’t require pesticides or irrigation. It also can be used as a feed stock for ethanol production.

Guayule rubber is nothing new surprisingly. To make rubber balls Native Americans used guayule. Because of a leaf blight outbreak that destroyed the rubber trees in Brazil in the 1920s, rubber was made from guayule. Because in the 1940s the war with Japan made it impossible to import rubber from Malaysia, guayule was used to produce latex. Guayule rubber was abandoned as a source of domestic rubber quickly after Brazilian trees recovered from the leaf blight and World War II ended. Lobbyists worked to keep oil-based synthetic rubber on the market and rubber producers in Southeast Asia were able to produce rubber more economically, despite guayule’s natural allure.

Things changed then again. Beginning in the 1970s-in response to the oil embargo- U.S. policy makers began to look at alternatives to oil-based synthetic rubber. Once again began guayule research and development.

Enter the 1980s when because of AIDS the problem with latex allergies became unavoidable. Then and still now, with the demand being so high, guayule natural rubber is a product invaluable for anyone requiring hypoallergenic products.

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