Avoid using wrinkle-free clothing and bedding sheets.
Healthy HouseTM CleanAir Tip
There are many wrinkle-free products, everything from shirts to bedding sheets. In order to make something wrinkle-free you have to bring in the reinforcements: chemicals to strengthen the fabric. The fabric is given a bath in resins to strengthen it and then saturated in formaldehyde to further resist wrinkles.
Formaldehyde is a human carcinogen as declared by the National Cancer Institute. In 1987, the EPA declared formaldehyde as a probable carcinogen. And in 2011, the National Toxicology Program, part of the U.S. Department of Health and Human Services, classified formaldehyde as a known human carcinogen.
Exposure to formaldehyde produces a laundry list of possible health hazards including irritation to the eyes, nose and throat, nausea, and skin irritation.
Unfortunately, there is no law or regulation to disclose to the consumer when formaldehyde is used. The best way to protect yourself is to not use or own wrinkle-free products.