Patagonia · Stain-Resistant Jeans
Patagonia Women's Slim Work Denim Pants
Lower concern. Untreated cotton denim with no known water-repellent coating finish.
These pants are untreated cotton-blend denim without advertised water-repellent or stain-resistant coatings, which are typical PFAS vectors. Patagonia doesn't disclose PFAS practices. The absence of functional finishes reduces risk compared to waterproof outerwear.
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Material
Cotton-blend denim (no stated water-repellent or stain treatment)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
PFAS exposure happens more often with clothing products.
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
Formaldehyde / VOCs
Raw denim may contain trace formaldehyde from cotton processing and weaving size; this is not eliminated by Patagonia's standard process unless explicitly Oeko-certified. Initial washing removes most residual formaldehyde; no health incidents have been reported for Patagonia denim in this regard.
Source: ATSDR ↗Antimony in polyester blend components
If elastane or polyester is present in the blend (common for stretch and durability), antimony trioxide catalyst residue may be detectable at trace levels. Dermal exposure to residual antimony in textiles is considered low-risk by ECHA and CPSC; no human health incidents linked to denim elastane have been established.
Microplastic shedding during wash
All synthetic fiber blends shed microfibers during laundering; polyester or elastane content in denim contributes to this. This is an environmental concern rather than a direct consumer health hazard, but relevant for product lifecycle assessment.
What’s reassuring
Safe base material
Made from ceramic, mineral, or natural fiber with no PFAS risk.
Azo dyes and synthetic colorants
Indigo denim and reactive dyes used in standard cotton textiles are subject to EU and OEKO-TEX restrictions on carcinogenic azo compounds. No specific recalls or hazard reports exist for Patagonia denim; loose dyes rinse out in initial washes.
Heavy metals
Indigo dye itself is metal-free; zinc-based button and rivet hardware is standard across the industry and poses negligible dermal absorption risk. No cadmium or lead contamination has been documented in Patagonia denim or hardware.
Source: FDA ↗The full breakdown
What it's made of and why it matters
These are standard cotton-blend denim pants with no stated water-repellent or stain-resistant chemical treatment applied. The absence of a water-repellent coating (water-repellent coating) finish eliminates the primary vector for PFAS contamination in modern workwear. Cotton-dominant blends naturally shed residual dyes and finishes during washing, which is why initial rinses matter; standard indigo and reactive dyes used in denim are well-regulated in most Western manufacturing.
The brand's record and disclosure
Patagonia has a documented history of transparency on chemical inputs and environmental standards, publishing detailed supply-chain reports and committing to restricted chemical lists (ZDHC and Bluesign compliance in many product lines). The company does not publicly claim this specific style as treated, which aligns with the absence of any performance claims on the product label. No recalls or safety controversies specific to Patagonia denim have been established in public records.
How it compares in its category
Untreated denim is safer than stain-resistant alternatives marketed with fluorocarbon finishes (which contain PFAS). This product sits in the lower-hazard subset of workwear denim; most competitors in the stain-resistant segment use PFAS-based treatments or alternative fluorine-free repellents whose long-term safety profiles are still emerging. Patagonia's omission of treatment is a deliberate design choice favoring durability over chemical performance.
If you buy it
Wash once or twice before wearing to reduce loose dyes and finishes. Standard cold or warm water laundering is safe; denim tolerates typical home care without heat sensitivity issues. Replace when seams fail or fabric thins excessively at stress points; untreated denim will not repel stains, so accept visible marks as part of the wear pattern. No special disposal precautions needed; standard textile recycling or compost applies.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Patagonia has made none
Formulations change between production runs, so check the current label. How we grade.
More stain-resistant jeans 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.