Propylparaben (Propyl p-hydroxybenzoate)
Banned in EUA paraben in your pastry. The EU said no back in 2006. Also listed on labels as E216, Propyl p-hydroxybenzoate, Propyl paraben.
E-number: E216
What it is
The same family of preservative most people associate with shampoo and lotion — parabens — used here to stop mold and bacteria in food. It's most at home in soft baked goods, where moisture and shelf life fight each other.
Why it's in food
Tortillas, muffins, and snack cakes are ideal mold habitat, and propylparaben buys weeks of shelf life for a fraction of a cent. It's odorless, tasteless at use levels, and effective in tiny amounts.
US vs EU status
United States
GRAS — a status granted in 1973 and, critics note, never seriously revisited since. Advocacy groups petitioned the FDA to revoke it after studies raised endocrine concerns, and the petition stalled. California's 2023 food safety law originally targeted propylparaben before it was cut from the final bill. So it remains legal, common, and running on 50-year-old paperwork.
European Union
Banned in food since 2006. Europe's regulator re-examined propylparaben, found effects on sex hormones and the male reproductive system in young rats, concluded it couldn't set a safe daily intake, and withdrew the approval. Its cousin methylparaben stayed legal — this is a targeted removal based on the specific evidence, not a blanket paraben purge.
Common products
- Flour tortillas and tortilla products
- Muffins, snack cakes, and soft baked goods
- Some pastries and pie crusts
- Food dyes and flavorings as a carrier preservative
- Cosmetics, lotions, and shampoos — its more famous address
Cleaner swaps
- Refrigerated or frozen baked goods — cold does what parabens do
- Bakery-fresh tortillas and breads
- Products preserved with cultured dextrose or vinegar
- Anything with a short honest expiration date
Case note
Europe pulled propylparaben from food in 2006 after concluding it couldn't set a safe daily dose — and pointedly left its cousin methylparaben alone, which is what a careful regulator looks like. America's answer is a GRAS designation from 1973 that no one has reopened. The gap between those two files is 50 years wide.
FAQ
Why did the EU ban propylparaben but not methylparaben?
Because the evidence pointed at one and not the other. Europe's 2004 review found propylparaben affected sex hormones and the male reproductive system in young rats and concluded no safe daily intake could be established, so approval was withdrawn in 2006. Methylparaben's data didn't show the same effects and it stayed legal. Precision, not panic — which is what makes the ban hard to dismiss.
Is propylparaben an endocrine disruptor?
That's the charge, and it's contested. Parabens can weakly mimic estrogen in laboratory tests, and the rat studies behind Europe's ban found reproductive effects at high doses. US regulators consider dietary exposure too low to matter. Both sides are reading the same rodent data and disagreeing about the margin of safety — the recurring plot of this entire library.
Is it the same paraben that's in shampoo?
Yes, the identical molecule — which is why it startles people to find it in a tortilla. Cosmetic parabens became a consumer issue in the 2000s and many personal-care brands dropped them; the food side never got the same attention. Same compound, two aisles, wildly different levels of public scrutiny.
How do I avoid it?
It's labeled honestly — 'propylparaben' appears by name — and the highest-yield place to check is the tortilla and soft-baked aisle. The general rule holds here: shelf-stable softness is engineered, and the engineering has a name in the ingredient list. Refrigerated and bakery-fresh versions usually skip it.
How the FDA decides what reaches your table and your medicine cabinet — and how it learned to decide.
Related files
Carrageenan Irish moss extract
Seaweed-derived. The gut-inflammation fight won't die.
Open file →Polysorbate 80 Tween 80
Keeps ice cream creamy. Microbiome studies keep raising flags.
Open file →CMC Carboxymethylcellulose
Thickens everything — now linked to gut-barrier questions.
Open file →BVO Brominated vegetable oil
Banned in 2024 — after 50+ years in citrus sodas.
Open file →