Fels-Naptha · Fabric Stain Guard Sprays
Fels-Naptha Laundry Soap
Laundry soap is unlikely to contain PFAS. Lower concern product.
Fels-Naptha is traditional soap without surface treatments or coatings typical of PFAS products. No disclosed PFAS risk exists in this category.
We flunk more products than we pass. This one earned its grade. How we grade
Material
soap bar (saponified tallow, coconut oil, naptha)
Lab data
No public lab test
What Fels-Naptha Laundry Soap is made of, ingredients and materials
Fels-Naptha is a bar soap made from saponified tallow (rendered animal fat) and coconut oil, combined with naphtha (a petroleum distillate historically used as a solvent and cleaning booster). The naphtha component evaporates during manufacturing and use, leaving behind a simple fatty-acid soap. This is a traditional formulation that predates modern synthetic detergents and contains no complex polymers, binders, or stabilizers that would introduce leaching concerns.
What’s concerning
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
Fragrance allergens or sensitizers
Fels-Naptha contains fragrance compounds (specific ingredients not fully disclosed on label). Common soap fragrances may include limonene or other natural fragrance components; risk of contact dermatitis exists in sensitized individuals, though incidence is low for bar soaps.
Skin irritation from high alkalinity
Bar soaps are naturally alkaline (pH typically 9-10). Prolonged skin contact during washing or handling may cause dryness or irritation in sensitive individuals; this is a property of the soap type, not a manufacturing defect.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Residual naphtha or aromatic solvent traces
Naphtha is volatile and evaporates during soap manufacturing and drying. No regulatory testing or recalls document residual naphtha in finished Fels-Naptha bars. Exposure during normal laundry use is not a documented concern.
Heavy metals
No recalls or testing data on public record indicate heavy metal contamination in Fels-Naptha bars. Tallow sourcing is not disclosed, so upstream feed quality cannot be independently verified, but finished-product risk is minimal.
Source, FDA ↗Microplastic or synthetic polymer additives
Fels-Naptha is formulated as a simple saponified-fat bar with no reported microbeads, polyethylene, or synthetic polymer additives. Composition is consistent with traditional soap chemistry.
The full breakdown
The brand's record and disclosure
Fels-Naptha, owned by The Dial Corporation (Henkel), has a long history as a commodity laundry soap with no major safety recalls or regulatory actions on record. The brand does not publish detailed material disclosures or third-party certifications (no USDA organic, EWG verification, or similar claims). Henkel has not publicly committed to PFAS reduction, though laundry soaps in this category are unlikely to contain PFAS by formulation design.
How it compares in its category
As a laundry soap, Fels-Naptha sits at the simple end of the detergent spectrum; it contains fewer synthetic additives than modern laundry liquids or powders. Relative to branded fragrance-heavy or enzyme-boosted products, it poses lower chemical complexity risk. However, it also lacks brighteners, stain-fighters, and enzymes, so cleaning performance is more basic. For raw ingredient safety, it is comparable to other vegetable or tallow-based bar soaps.
If you buy it
Use as directed on the label, dissolve a small amount in water or rub directly onto stains before washing. Because it is a simple fatty soap, it works best in soft or moderately hard water; hard water can reduce effectiveness or leave residue. Store in a dry place to prevent the bar from softening prematurely. No special maintenance or replacement triggers apply; discard when fully consumed. Rinse thoroughly in the wash cycle to avoid soap buildup on fabric.
What we don’t know
- Basis
- Model estimate, 85% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Fels-Naptha has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
More fabric stain guard sprays grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.