Withings Review, Is Withings Non-Toxic?
Across 17 graded products, Withings averages Excellent (82/100). On disclosure, the brand says nothing publicly about PFAS. 16 of its products grade Good or better. Grades are model-based estimates, not lab results.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
Does Withings have PFAS, by category
Worth buying from Withings Good or better, best-graded first
Withings
Milanese Mesh Loop Bracelet
Stainless steel mesh loop band
Nickel leaching from stainless steel
Stainless steel inherently contains 8-12% nickel. In persons with nickel contact…
Allergic reactions from contact
Beyond nickel, individuals with metal sensitivities or latex-adjacent reactions to…
Bacterial growth in mesh crevices
The mesh design creates small pockets where sweat, skin cells, and bacteria may…
Stainless steel watch band carries low PFAS concern.
⚠Brand says nothing about PFAS
Withings
Compatible For Withings Smartwatch Bands, Lamshaw 18mm, 20mm Size
Silicone or elastomer band
Skin irritation or allergic contact dermatitis
Silicone itself is hypoallergenic, but dyes, additives, or residual manufacturing…
Bacterial or fungal colonization
While silicone resists bacterial growth better than fabric, trapped sweat and poor band…
Degradation or microplastic shedding
Long-term UV exposure or extreme heat can cause silicone bands to become brittle or peel…
Low risk. Silicone bands rarely contain PFAS.
⚠Brand says nothing about PFAS
Withings
Watch ScanWatch Elastic Watch bands
Elastic polymer watch band
Volatile organic compound (VOC) off-gassing
Elastomer polymers may release residual monomers or solvents during manufacturing and the…
Skin irritation or allergic contact dermatitis
Direct, prolonged skin contact with elastomer bands can cause localized irritation in…
Microplastic shedding from band degradation
Elastomer bands can degrade over time with UV exposure, heat, or mechanical wear…
Low risk. No PFAS signals identified but no transparency.
⚠Brand says nothing about PFAS
Withings
Recycled Woven PET Wristbands for Steel HR, Steel HR Sport, Move ECG, Move, Steel, and ScanWatch
Recycled woven PET polyester
Heavy metals
Recycled PET wristbands often undergo dyeing. Withings does not disclose dye chemistry or…
Formaldehyde / VOCs
Woven synthetics may be treated with formaldehyde-based resins for durability. No…
Microplastics
Woven PET sheds microscopic fibers during wear and washing. This is not a skin toxicity…
Contact irritation or allergic sensitization from residual processing chemicals
Recycled PET may retain processing oils, solvents, or finishing residues not fully…
Lower concern. Material as recorded is not linked to PFAS.
⚠Brand says nothing about PFAS
Withings
Compatible For Withings Smartwatch Bands, Lamshaw 18mm Size Band, Gray
Silicone watch band
Volatile organic compounds (VOCs) from manufacturing residues
Silicone manufacturing can leave trace volatile residues; these typically off-gas within…
Microbial growth and biofilm if band is not cleaned
Silicone's porous microstructure can harbor bacteria and fungi if the band remains damp…
Coating or finish degradation over extended use
Lower-cost silicone bands may have a thin gloss or UV-resistant coating that can peel or…
Skin irritation from tight fit or sweat accumulation
Watch bands worn continuously can trap moisture and create a humid microclimate, leading…
Low risk. Silicone band likely lower PFAS concern.
⚠Brand says nothing about PFAS
Withings
ScanWatch Light Smart Watch
Stainless steel case, sapphire crystal, elastomer strap
Elastomer strap degradation
Rubber straps degrade with prolonged heat, UV exposure, and sweat accumulation. While no…
Water ingress and bacterial growth
The device is rated 10 ATM water resistance, sufficient for swimming but not diving. If…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Withings
Withings Move
Stainless steel case, plastic/silicone band, electronic components
Silicone band degradation and skin irritation
Silicone is generally well-tolerated, but prolonged contact can cause localized…
Battery leakage (internal lithium-ion cell)
The Move contains a sealed rechargeable battery. If the device is crushed, dropped, or…
Activity tracker with minimal PFAS concern; lower risk profile.
⚠Brand says nothing about PFAS
Withings
ScanWatch Light Hybrid Smart Watch
Stainless steel case, polymer straps, electronic components
Polymer strap degradation and skin contact
Repeated sweat exposure and UV light can degrade elastomer straps over time, potentially…
Adhesive or glue residue on strap interfaces
The junction between strap and case may contain adhesives to reinforce the seal. If strap…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Withings
Scanwatch HWA09 Hybrid Smartwatch
stainless steel, sapphire crystal, elastomer band
Elastomer band degradation and additive leaching
Elastomer bands commonly contain plasticizers (phthalates or non-phthalate alternatives)…
Bacterial and fungal growth on band
Elastomer bands are porous and accumulate sweat, dead skin cells, and moisture. Poor…
PFAS
The Scanwatch claims 50m water resistance but Withings does not disclose whether…
Stainless steel nickel content and skin sensitivity
316L stainless steel contains nickel (typically 8-12%). Most users tolerate this…
Waterproofing method unknown; insufficient PFAS transparency.
⚠Brand says nothing about PFAS
Withings
ScanWatch Vitals
Stainless steel case, sapphire crystal, silicone/rubber strap
Nickel release from stainless steel case (contact dermatitis)
Surgical-grade 316L stainless steel contains <10% nickel by design, significantly lower…
Silicone strap degradation and microparticle shedding
Silicone straps can degrade over years of UV exposure and mechanical flexing, potentially…
Bacterial or fungal growth in strap-case junction
The seal between the silicone strap and stainless steel case can trap moisture and sweat…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Withings
ScanWatch 2 Hybrid Smartwatch
Stainless steel case, sapphire crystal, elastomer bands with water resistance
water-repellent coating (water-repellent coating) treatment chemistry
Water resistance is likely achieved with fluorinated water-repellent coating, commonly…
Skin sensitization from band contact
Elastomer dyes and processing residues can trigger contact dermatitis in sensitive…
Coating degradation and microparticle release
Over years of wear, the water-repellent coating and band surface finish may degrade…
No PFAS disclosure available; likely water-repellent coating-treated.
⚠Brand says nothing about PFAS
Withings
Smartwatch 0850630 Smartwatch Withings INW510 Scanwatch + Body White
Stainless steel case, elastomer/polymer band
Allergens in band material or finishes
Elastomer bands may contain residual mold release agents or accelerators used in…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Withings
Smartwatch Withings Scanwatch Wristband Withings ScanWatch 38mm Black
Rubber/elastomer wristband
Colorants and dyes in elastomer
Black rubber wristbands can contain carbon black or synthetic dyes; no test data…
Rubber accelerators and vulcanization residues
Manufacturing elastomers uses accelerators (e.g., thiazoles, thiurams) and sulfur…
Bacterial growth and biofilm
Any wristband worn continuously creates a warm, moist microenvironment; regular cleaning…
Polymer degradation and microparticle shedding
Elastomers degrade under UV, sweat, and thermal stress; prolonged wear may generate…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Withings
Pulse O2 Activity Tracker
Plastic casing, elastomer band
Elastomer band degradation and skin irritation
Elastomer materials can degrade with sweat, UV exposure, and age, potentially releasing…
Microplastic shedding from band wear
Extended use of elastomer bands can produce microscopic particles if the material…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Withings
Smartwatch Withings Steel HR Sport
Stainless steel case, possibly water-resistant polymer gaskets
BPA & bisphenols
Water-resistant gaskets are typically synthetic rubber or elastomer, materials that can…
Stainless steel leaching (nickel)
Stainless steel contains trace nickel and can leach it slightly in sweat or salt water…
Bacterial growth in water-resistant seals
If gaskets trap moisture and are not dried properly between uses, bacteria or mold could…
Silicone or rubber band additives (if interchangeable band used)
Replacement bands sold separately may contain uncertified elastomers or colorants. If you…
No coating described, and no PFAS statement from the brand.
⚠Brand says nothing about PFAS
Withings
Compatible for Withings Smartwatch Bands, 18mm, 20mm Quick Release New Soft Silicone Sport Replacement Straps for Women
Silicone elastomer, no surface treatment disclosed
Silicone degradation and surface oxidation
Extended UV exposure or high heat can cause silicone to become brittle, crack, or release…
Bacterial or fungal colonization
Although silicone resists microbial growth better than organic materials, poor hygiene…
Low risk. Silicone bands lower concern but no transparency.
⚠Brand says nothing about PFAS
Graded and flagged Poor and Bad, we’d swap these
Withings
Unisex Scanwatch Nova Brilliant Edition Watch
Stainless steel case, sapphire crystal, fluoroelastomer strap with water resistance coating
PFAS
Fluoroelastomer straps used in smartwatches are typically treated with fluorine-based…
Fluoroelastomer strap degradation and leaching
Over 2-3 years of daily use, fluoroelastomer can degrade, crack, and potentially release…
Smartwatch coating unaddressed; Withings provides no PFAS guidance.
⚠Waterproof or stain-proof treatment
Withings and PFAS, common questions
- Does Withings have PFAS?
- We graded 17 Withings products, averaging Excellent (82/100). 16 grade Good or better. Grades are model-based estimates built from published materials, ingredients and disclosures, not lab tests.
- Is Withings non-toxic?
- Withings Milanese Mesh Loop Bracelet is the highest-graded Withings product we have scored, at 85/100. It depends on the product line rather than the brand, so check the grade of the exact item you are buying.
- Which Withings products are lower concern for PFAS?
- The highest-graded Withings products we have scored are Withings Milanese Mesh Loop Bracelet, Compatible For Withings Smartwatch Bands, Lamshaw 18mm, 20mm Size, Withings Watch ScanWatch Elastic Watch bands. That is our model-based estimate from materials and public disclosure, not a lab test.
- Which Withings products should I avoid?
- The lowest-graded Withings products we have scored are Withings Unisex Scanwatch Nova Brilliant Edition Watch. Each one links to the evidence behind its grade.
Every grade uses the same public rubric. How grades work →