Microwave Popcorn Review, Is Microwave Popcorn Non-Toxic?
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
Across 4 graded products, Microwave Popcorn averages Poor (25/100). On disclosure, the brand says nothing publicly about PFAS. None of its products grade Good or better yet. Grades are model-based estimates, not lab results.
Graded and flagged Poor and Bad, we’d swap these
Microwave Popcorn
Pop Secret Microwave Popcorn Movie Theater Butter
Microwave bag with grease-resistant paper and plastic lining
PFAS
Grease-resistant microwave popcorn bags typically contain PFAS (Teflon-type coating or…
Microplastics
Repeated or prolonged microwave heating can crack or wear the inner plastic film.…
Phthalates
Polyethylene or PVC-based linings may contain phthalate plasticizers to improve…
Grease-resistant popcorn bags often contain PFAS; brand offers no disclosure.
⚠Waterproof or stain-proof treatment
Microwave Popcorn
Kirkland Signature Microwave Popcorn
paper bag with grease-resistant coating
PFAS
Microwave popcorn bag linings historically contain PFAS for grease repellency. Kirkland…
Thermal migration from coating
Microwave heating (typically 160-220 degrees F inside bag) may increase leaching of…
Coating degradation over time
Storage in warm or humid conditions, or exposure to light, can degrade the internal bag…
Microwave popcorn bag coating composition unconfirmed by brand.
⚠Waterproof or stain-proof treatment
Microwave Popcorn
SkinnyPop Popcorn
paper/paperboard bag with grease-resistant coating
PFAS
Industry-standard practice in microwave popcorn bags; SkinnyPop has not disclosed…
Coating particle migration if bag is damaged
If the bag is overheated, punctured, or torn before use, coating fragments could enter…
Mineral oil or petroleum-derived lubricants in coating
Some fluorinated coatings are combined with mineral oil for processing; SkinnyPop…
Microwave popcorn bags often contain PFAS-based grease barriers.
⚠Waterproof or stain-proof treatment
Microwave Popcorn
Snappy Movie Theater Butter Microwave Popcorn
Paper bag with grease-resistant coating
PFAS
If the coating contains non-fluorinated polymer alternatives or additives like bisphenol…
Thermal degradation of bag coating during microwave use
Repeated heating or overheating may cause the grease-resistant layer to degrade or flake…
Microplastic shedding from coating wear
Repeated flexing, moisture exposure, or thermal stress during storage and cooking may…
Skip until brand discloses coating ingredients.
⚠Waterproof or stain-proof treatment
Every grade uses the same public rubric. How grades work →