Fels-Naptha · Fabric Stain Guard Sprays
Fels Naptha Laundry Bar and Stain Remover, 5.0 oz
Lower concern. Traditional soap bar without known PFAS inputs.
Fels-Naptha is classic soap from tallow and coconut oil. No water-repellent, stain-resistant or non-stick coatings typically containing PFAS are present.
We flunk more products than we pass. This one earned its grade. How we grade
Material
soap bar, tallow and coconut oil base
Lab data
No public lab test
What Fels Naptha Laundry Bar and Stain is made of, ingredients and materials
Fels-Naptha is a solid soap bar formulated from tallow (rendered animal fat) and coconut oil, combined with sodium carbonate and other minor soap-making additives. This is a conventional alkaline soap product, not a synthetic detergent blend or surfactant concentrate. The solid bar format eliminates need for plastic packaging fillers or preservative systems that plague liquid cleaners, reducing exposure pathways for common synthetic additives.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Alkaline burn risk (skin/eyes)
Soap bars are alkaline (pH 9-11 typical) and can irritate or burn skin and eyes on direct contact or with prolonged exposure. Users with sensitive skin should test on a small area first and rinse thoroughly after application.
Fragrance allergens
Fels-Naptha contains fragrance compounds (citrus and herbal notes). Fragrance is a known skin and respiratory allergen; individuals with fragrance sensitivity or asthma should avoid or use with ventilation. Full fragrance ingredient disclosure is not typically provided by the manufacturer.
Residue build-up on fabric
Bar soap can leave visible or tactile mineral deposits on fabric if water is hard or rinse is incomplete. This is cosmetic and not a health hazard, but may reduce fabric softness or color clarity over time.
Mold or bacterial growth on bar
Wet soap bars stored in moist bathrooms or poorly ventilated areas can develop mold or bacterial film on the surface. Regular drying and storage in a dry location mitigates this; surface mold can be washed off before use but signals inadequate storage conditions.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Heavy metals
No reports of lead, cadmium, or other heavy metals in Fels-Naptha formulations. Soap bars do not typically require colorants or mineral fillers that pose heavy metal risk, though third-party testing is not publicly available.
Source, FDA ↗The full breakdown
The brand's record and disclosure
Fels-Naptha has been manufactured by The Dial Corporation (now owned by Henkel) since 1896 and remains largely unchanged in formulation. The brand does not publish detailed safety data sheets or third-party certifications (e.g., EPA Safer Choice, EWG Verified). No recalls or safety controversies specific to this product are on record in FDA or CPSC databases. The brand's silence on PFAS, formaldehyde releasers, and heavy metals is consistent with traditional soap products that typically do not require such additives.
How it compares in its category
Fels-Naptha sits at the low end of complexity for laundry stain removers, it is a pure soap bar without synthetic stain-fighting polymers, enzymes, or optical brighteners found in modern liquid detergents. This simplicity is an advantage for hazard reduction, as there are fewer chemical inputs to assess. Compared to spray stain guards (which often contain silicones, surfactants, or water-repellent coatings), a soap bar has minimal formulation surface area for hazardous coatings or volatile components.
If you buy it
Wet the stained fabric and rub the bar directly on the spot, or dissolve shavings in water and soak. Use on washable fabrics only; test on hidden seams first, especially on delicate dyes or finishes sensitive to alkaline pH. Store in a dry location between uses to prevent excessive softening or mold growth on the bar itself. Replace when the bar becomes too small to handle safely or loses structure.
What we don’t know
- Basis
- Model estimate, 82% 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.