Rex Klister
Likely lower PFAS concern than fluorinated ski waxes.
Rex Klister is a hydrocarbon-based ski wax without known PFAS treatment. Hydrocarbon formulations typically carry lower concern than fluorinated alternatives.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Hydrocarbon wax blend
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Rex Klister is made of, ingredients and materials
Rex Klister is a hydrocarbon-based wax blend formulated for wet snow and spring conditions. Hydrocarbon waxes are petroleum derivatives that remain solid at room temperature and melt at moderate heat; they lack the fluorine chemistry of high-performance waxes. The 'klister' category refers to sticky, paste-like consistency optimized for grip rather than speed, which is a simpler formulation than racing waxes.
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.
Volatile organic compound (VOC) emissions
Hydrocarbon waxes may off-gas minor volatile compounds during application or in warm storage; no specific data published for Rex Klister. Risk is low in outdoor use and negligible in typical home storage.
Skin irritation or contact dermatitis
Hydrocarbon waxes can cause mild irritation with prolonged direct skin contact, especially if applied repeatedly or if skin is already compromised. Individual sensitivity to petroleum derivatives varies; no allergic incidents documented for Rex brand specifically.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Heavy metals
Klister typically contains minimal pigmentation compared to colored base waxes. No reports of lead, cadmium, or other heavy metals in ski wax; this hazard is not established for the product category.
Source, FDA ↗Coating degradation and particle shedding
Hydrocarbon waxes do not degrade into microplastics; they are designed to wear away cleanly. No evidence of hazardous particles from normal use.
Formaldehyde / VOCs
Ski waxes are not typically treated with antimicrobial or formaldehyde-releasing compounds. No public record of such additives in Rex products.
Source, ATSDR ↗How is this PFAS grade calculated?
The brand's record and disclosure
Rex is a Norwegian ski wax manufacturer with decades of market presence but minimal public disclosure on ingredient sourcing, manufacturing standards, or chemical safety testing. No major recalls or safety controversies are on record for Rex products. The brand does not publish MSDS or safety certifications that would indicate independent toxicology review, typical of the wax category where regulation remains limited.
How it compares in its category
Hydrocarbon klister has lower concern on the ski wax spectrum, it avoids fluorinated additives (Teflon-type coating, PFOA, other PFAS) that are present in high-end racing products. It is more transparent chemically than proprietary blends but less regulated than cosmetics or food contact materials. Most ski waxes lack third-party safety certification, making Rex comparable to competitors rather than exceptional.
If you buy it
Apply in a well-ventilated space; hydrocarbon waxes produce minimal fume but are not designed for inhalation. Store in cool, dry conditions away from heat sources to prevent unwanted softening or breakdown. Wash hands after application to avoid skin contact during extended use. Replace when visibly degraded, discolored, or when performance drops noticeably (typically every 2-3 seasons of regular use).
What is not known about PFAS in this product?
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Rex has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Rex Klister?
- hydrocarbon ski wax (non-fluorinated)
- The brand calls it PFAS-free, which we have not verified
- Volatile Organic Compounds (VOCs) and mineral oil vapor
3 hazards checked on this product, all on its full breakdown.
- hydrocarbon wax blend
- The brand calls it PFAS-free, which we have not verified
- Thermal degradation and fume emission
3 hazards checked on this product, all on its full breakdown.
- Wax-based ski base, fluorine-free formulation
- The brand calls it PFAS-free, which we have not verified
- Inhalation of wax particulates and volatiles during application
More ski & sports wax 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.