Is polyethylene glycol a carcinogen?
Introduction
There was a study in mice which linked it to tumours, but the results aren't conclusive.
You shouldn't worry too much about it.
There was a study in mice which linked it to tumours, but the results aren't conclusive
A small study in mice found that oral exposure to PEG caused tumours in the animals. However, this was an animal study, not a human one.
Moreover, it's important to note that other studies have shown no link between PEG and cancer (and one even showed a protective effect)
You shouldn't worry too much about it
This is not to say that PEG is completely safe. If a lot of it gets on your skin and you don't wash it off, it can irritate your skin and cause burning. Ingestion in large amounts can be dangerous, too (but then again, so can water).
But the fact remains: The data showing that PEG causes cancer in mice is not conclusive by any means, and we have no evidence to suggest that it's a danger to humans at levels found in cosmetic products today. In other words: Don't worry about this stuff! As with many things regarding safety and cosmetics ingredients research—like parabens or formaldehyde—you should trust our guts over studies done decades ago on mice or rats.
Frequently Asked Questions (FAQs)
Q: Is polyethylene glycol (PEG) safe for use in cosmetics?
A: Polyethylene glycol is commonly used in cosmetics as a moisturizer, emulsifier, and solvent. While pure PEG is generally considered safe, individuals with sensitive skin may experience irritation or allergic reactions to certain PEG-based cosmetics. It's essential to read product labels and perform patch tests before using PEG-containing cosmetics.
Q: Can polyethylene glycol (PEG) be ingested?
A: Polyethylene glycol is commonly used as an inactive ingredient in pharmaceuticals, laxatives, and oral solutions. When used as directed, PEG-based products are generally safe for ingestion. However, individuals with gastrointestinal conditions or sensitivities should consult healthcare professionals before using PEG-containing medications or supplements.
Q: Are there any side effects associated with polyethylene glycol (PEG) consumption?
A: While polyethylene glycol is generally well-tolerated, some individuals may experience mild gastrointestinal side effects such as bloating, gas, or diarrhea when using PEG-containing laxatives or medications. These side effects are usually temporary and resolve once treatment is discontinued.
Conclusion
So, is PEG a carcinogen? The answer is probably no. In the original study, even after extensive exposure to PEG mice did not get tumours. There are other studies that show no link between PEG and cancer development in humans or animals. It's likely that the results of this study were due to contamination of the mice feed with some kind of carcinogen that was unrelated to polyethylene glycol but present nonetheless. In other words, if you're worried about getting cancer from using cosmetics containing polyethylene glycol don't be! Just because something can cause cancer doesn't mean it does so in all cases - there are always exceptions! For more info on PG see our blog.
