303 Protectant · Fabric Stain Guard Sprays
303 Fabric Guard Fabric Protectant Spray
Avoid until brand provides ingredient transparency; repellent coatings often use PFAS.
Water and stain protectant spray using proprietary coating formula. Brand makes no PFAS claims; fabric protectants frequently contain fluorinated compounds.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
proprietary water and stain repellent coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What 303 Fabric Guard Fabric Protectant Spray is made of, ingredients and materials
303 Fabric Guard is a proprietary water and stain repellent coating designed to bond to synthetic and natural fibers. The exact chemical formulation is not publicly disclosed, which is standard practice for branded protectants but prevents independent hazard assessment. Water-repellent textile finishes historically rely on fluorinated compounds (PFAS) to achieve durability, though some modern alternatives use silicone-based or hydrocarbon chemistries. Without ingredient transparency, the presence and type of any PFAS cannot be confirmed from available sources.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
Vague safety claims only
Uses vague language ("eco-friendly", "clean") without a specific PFAS statement.
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
PFAS
Water and stain repellent finishes commonly contain perfluorinated compounds for durability. 303 does not disclose whether its proprietary formula includes PFAS; the absence of a PFAS-free claim suggests possible presence. No independent testing on this product is publicly available.
Source, ATSDR ↗Inhalation risk from spray application
Aerosol fabric protectants release fine particles and volatile organic compounds during application. Acute respiratory irritation is possible with inadequate ventilation, particularly in sensitive individuals. No specific pulmonary hazard data for this product is documented, but spray-on textile treatments routinely warrant respiratory precaution.
Volatile organic compound (VOC) off-gassing
Spray-applied coatings typically contain solvents and carriers that evaporate during and after application. The treated fabric may continue minimal off-gassing for hours to days; quantitative VOC data for this product is not publicly available.
Coating durability and reapplication burden
The product requires periodic reapplication, indicating the coating is not permanent. Frequent reapplication increases cumulative exposure to spray inhalation and unconfirmed chemical ingredients over time.
What’s reassuring
Skin irritation or sensitization from dried residue
Once fully cured, fabric protectants are generally considered low-risk for skin contact. No adverse event reports specific to 303 Fabric Guard are documented, but individual sensitivity to coating residues cannot be excluded.
How is this PFAS grade calculated?
The brand's record and disclosure
303 Products is a marine and automotive protective coatings manufacturer with no public disclosure of PFAS content in their fabric product line. The brand has not published ingredient lists, safety data sheets for consumer use, or statements addressing PFAS concerns. No major recalls or safety controversies are documented for this specific product. The silence on ingredients is a significant limitation for informed purchasing.
How it compares in its category
Fabric protectant sprays occupy a gray zone, some brands now disclose PFAS-free formulations (Scotchgard Advanced, for example, moved away from PFOS in the 2000s), while others remain opaque. 303's lack of transparency places it in the higher-risk segment compared to brands offering third-party testing or explicit PFAS-free certifications. Performance claims are comparable, but safety assurance is lower.
If you buy it
Apply in a well-ventilated area (outdoors preferred) to avoid inhalation of spray particles. Allow the treated fabric to dry completely before contact with skin or food-contact surfaces, typically 24-48 hours depending on humidity. Do not spray on furniture used by infants or very young children without extended ventilation. Reapply every 6-12 months depending on use and washing frequency; reapplication suggests the coating degrades normally over time.
What is not known about PFAS in this product?
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- 303 Protectant has made none
Formulations change between production runs, so check the current label. How we grade.
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- Respiratory irritation or fume inhalation during application
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40303 High Tech Fabric GuardCompare vs Nikwax →All fabric stain guard sprays →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.