PS10 Yellow Wax vs Skin Impregnation: which is safer?
Swix PS10 Yellow Wax is the clear pick. Swix Skin Impregnation carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Swix
PS10 Yellow Wax
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleCombustion by-products during hot application
PossibleSkin and eye contact irritation
PossibleIngestion toxicity (accidental exposure)
Swix
Skin Impregnation
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleTeflon-type coating fume risk (thermal degradation)
PossibleInhalation exposure during application
LikelyAquatic ecotoxicity and bioaccumulation
Where these two actually differ
- We flag Combustion by-products during hot application, Skin and eye contact irritation, Ingestion toxicity (accidental exposure) and Microabrasive particulates from worn base or scraping on the Swix and not on the Swix.
- We flag PTFE fume risk (thermal degradation), Inhalation exposure during application, Aquatic ecotoxicity and bioaccumulation and Skin and eye irritation from direct contact on the Swix and not on the Swix.
- The Swix is Hydrocarbon-based ski wax (paraffin/synthetic blend) where the Swix is Fluorocarbon-based DWR treatment for ski/snowboard bases, which is most of the difference in these two grades.
- The gap is 60 points, wide enough that this is not a close call, and the Swix is the one to buy.
- We are less certain about the Swix grade, at 45% confidence against 72%, because it discloses less.
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More ski & sports wax: see the full ranking