Domino’s, McDonald’s, & Wendy’s Are All Feeding You A Chemical Used In Silly Putty


Polydimethylsiloxane, sounds tasty doesn’t it? Domino’s Pizza, McDonald’s, and Wendy’s think it is at least. The chemical has been stirring up some discussion recently due to its appearance in fast-food menu items. It belongs to a group of polymeric compounds commonly referred to as silicones, and applications of the chemical range from contact lenses and medical devices to shampoo and conditioners (making the hair shiny and slippery), caulking, heat resistant tiles, polishes, cosmetics, silly putty, and the list goes on.

Caulking (1)


The FDA approved chemical is classified as “non-toxic,” even though it is non-biodegradable and its commercial use in breast implants has decreased due to “safety concerns.” Under section 176.200, polydimethylsiloxane is listed as a defoaming agent which is an acceptable additive to food:

Sec. 176.200 Defoaming agents used in coatings.


The defoaming agents described in this section may be safely used as components of articles intended for use in producing, manufacturing, packing, processing, preparing, treating, packaging, transporting, or holding food, subject to the provisions of this section.(a) The defoaming agents are prepared as mixtures of substances described in paragraph (d) of this section.(b) The quantity of any substance employed in the formulation of defoaming agents does not exceed the amount reasonably required to accomplish the intended physical or technical effect in the defoaming agents or any limitation further provided.(c) Any substance employed in the production of defoaming agents and which is the subject of a regulation in parts 174, 175, 176, 177, 178 and 179.45 of this chapter conforms with any specification in such regulation.

(d) Substances employed in the formulation of defoaming agents include:

(1) Substances generally recognized as safe in food.

(2) Substances subject to prior sanction or approval for

Surprisingly, the FDA also approved formaldehyde as a preservative for anti-foaming agents. Formaldehyde is recognized as a carcinogen by the CDC.

images (12)20101201-wendysfries mcnugget

Domino’s Pizza lists the ingredient in their breadsticks, cheese bread, as well as in their “garlic butter oil,” commonly used on most of their pizzas.  McDonald’s lists polydimethylsiloxane as an additive in their cooking oils, meaning that their infamous McNuggets and french fries are saturated in the chemical.  Wendy’s Also uses the ingredient in their cooking oils. The FDA states that anti-foaming agents are “generally recognized as safe in food. ”The term “generally” is an elusive one at best. The question begs, why is the FDA approving food additives such as polydimethylsiloxane and formaldehyde when the substances frequently find industrial uses?




Material Data Safety sheets state that polydimethylsiloxane (or dimethicone for short) degrades to formaldehyde under higher temperatures, a concern due to the chemical’s use in fast-food cooking oils. Another MSDS revealed  dangers associated with fires/explosions and polydimethylsiloxane, which can generate formaldehyde as a by-product of oxidative thermal decomposition at temperatures greater than 150 degrees C.

In 2006, The Milkweed released a report in their monthly magazine which singled out Leprino Foods, the main manufacturer and supplier of cheese for Pizza Hut, as using polydimethylsiloxane as an anti-foaming agent for their cheese. Leprino sent a letter in response stating that they received the patent for using the chemical but that  “many practices are often claimed in patents, but are not utilized commercially.”


The use of polydimethylsiloxane provides yet another example of a “trusted” governing body letting the public down by the unethical regulation of our food. As time goes on I trust we will see more of the corruption behind the FDA being exposed. In the meantime, do yourself a favor and avoid the aforementioned fast food choices. It is clear there is a war being enacted on our health, and ultimately the only person who can save you is you.

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48 comments on “Domino’s, McDonald’s, & Wendy’s Are All Feeding You A Chemical Used In Silly Putty

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  2. joanne

    Putting any kind of chemical in your body that ain,t food could affect you in the long run on a molecular level. Those guys never study things long enough. if you don’t get sick or drop dead in a week then they market it as safe.

  3. Hana

    My question is why would cheese have to be “de-foamed” in the first place???

  4. So what’s the problem with using a food additive in Silly Putty?

    • Allen

      This is the best comment sir, thank you.

  5. Remona

    I don’t know about the rest of you, but I sure don’t want to eat Silly Putty. It’s a good thing I stopped eating the garbage from those places years ago.

    • I ate lots of silly putty as a kid and I truned out alritite.

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  7. Murray

    It is amazing what the body can do continuity healing it self, filtering out the majority of the harmful things in the food. to a point. but for how long. which chemical will have an defect and witch will not. well i dint know nether do you, so if it dos not kill quickly this dose not make it safe. there were no old roman solders the wine flasks were lined with lead. so wen you end up in the hospital the doctor will find something wrong and he will do what he knows to help you. what caused it well he only knows what went wrong not with particulate compound weakened you. for those of you whom believe all the stuff in the food is safe because a rich man said so, good luck with that. I would like to meet my grandchildren,


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  9. COMALite J

    Is there any known actual ill effect of this substance? Just because a chemical has industrial uses doesn’t mean it’s automatically harmful to health. After all, water is also used industrially, but try living without it.

    (Remember the DHMO thing from some years ago?)

    • Dale

      water is also used in nuclear reactors, and we let people use that in food?!?!

    • Paul

      Did you completely miss the part about it having formaldehyde in it?? Just one of the most toxic substances on earth that’s been linked to cancer, brain damage, auto-immune disorders, etc…

      • Dan

        it’s also produced by the body and is an essential chemical used by the body. “one of the most toxic substances” is actually made and used by the body, because, you know….. science.

      • pears have formaldehyde in them, apples have cyanide :/

  10. Pingback: Popular Fast Food Chains Using Silly Putty Food Additive

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