What diapers are safe? Here’s Our Verdict

Kudos Diapers

Caution$$

Last reviewed September 16, 2026

Quick verdict

A cotton topsheet and disclosed TCF/FSC pulp are positives; conflicting test results need resolution.

Check the package version: the research does not yet confirm an exact match to every current product. See version details.

Testing results vary across samples/sizes and current package generation must be matched to each test. See the full research below.

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Good / Caution / Avoid

Caution: Fluorine-screen results differ across samples and sizes.
Manufacturer and independent results need comparison of methods, limits and samples.
Good: Detailed current ingredient/material disclosure.
Cotton skin-contacting topsheet; TCF/FSC pulp disclosed.

Read the original editorial assessment

Verdict: Caution. Current package matching remains unresolved; read the newer evidence below.

The only major disposable we found with a 100% cotton topsheet rather than a plastic one against skin. TCF, OEKO-TEX certified, fragrance-, phthalate-, latex-, and paraben-free. One independent 2023 test found its size-4 diaper's organic fluorine (a PFAS marker) at up to 53 parts per million while the same-materials size 5 came back non-detect; Kudos then had a different lab (Vartest) retest in December 2023 for total organic fluorine, which came back non-detect, and disputes the original result as cross-contamination. That leaves the finding genuinely unresolved between two labs rather than confirmed clean, which is why this sits in caution rather than verified despite otherwise meeting every other criterion.

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Materials & ingredients

Factors flagged in the editorial review. Expand the research below for full formulation records, functions and sources.

Material or ingredient	What it is	Concern level	Why it's flagged here
PFAS	PFAS ("per- and polyfluoroalkyl substances") is a family of thousands of manufactured chemicals that share a carbon-fluorine backbone, one of the strongest bonds in organic chemistry.	Avoid entirely	A single 2023 test found organic fluorine up to 53 ppm on the size-4 diaper specifically; a same-materials size-5 came back non-detect, and a Kudos-commissioned retest at a different lab (Vartest) also found nothing. That leaves the finding genuinely disputed rather than confirmed, which is why this sits in caution rather than avoid despite the flag.

What's disclosed in our research

Materials disclosed by the manufacturer or a retailer, as captured in our research — not the same as the flagged-concerns table above, and not asserted here as a complete or currently-verified ingredient list unless noted. See the full research below for sources and limitations.

Component	Material	Touches skin?	Function
Skin-facing topsheet	100% U.S.-sourced cotton	Yes	Skin-contact liner
Acquisition layers	Polyethylene / PET	No	Fluid acquisition/distribution
Absorbent core	TCF/FSC cellulose pulp + sodium polyacrylate (SAP)	No	Absorbency
Breathable film	Polyethylene	No	Leak barrier / breathable film
Outer cover	Polyethylene / polypropylene	No	Outer cover
Other disclosed formulation materials	Hydrogenated hydrocarbon resins; hydrotreated mineral oil; titanium dioxide; styrene/isoprene copolymer; hydrogenated styrene/butadiene copolymer; polyurethane; calcium carbonate; VP/VA copolymer; ethylene/acrylic copolymer; bromocresol green; possible pigments	Not recorded	Adhesives, pigments, elastics, wetness indication and structural functions

Testing history

Source	Date	Tested for	Result
Independent lab testing	2023	Organic fluorine (a PFAS marker)	Size-4 diaper: up to 53 ppm detected. Same-materials size-5: non-detect.
Vartest (retest commissioned by Kudos)	December 2023	Total organic fluorine (Vartest method)	No detectable total organic fluorine. Kudos disputes the original 2023 finding as cross-contamination.

Certifications held

Certification	What it actually verifies
OEKO-TEX Standard 100	Tests textiles against a defined list of harmful substances; does not guarantee PFAS-free, since its test method can miss certain fluoropolymers.

Explore the research

Research record last verified: 2026-09-16.

This evidence file is still being deepened with citations and package-version detail — the published verdict above already reflects everything gathered so far, and doesn't change as that detail is filled in.

What you should know

Multiple independent organic-fluorine screens reported detectable ppm-level results in Size 4/other samples, while a Size 5 sample was non-detect.
Conflicting analytical evidence exists: Mamavation reported detectable organic fluorine in multiple samples, while Kudos reports Vartest Total Organic Fluorine testing of Size 4 as non-detect. Underlying methods, reporting limits, sample provenance and signed reports require direct reconciliation.

What's still uncertain

Detected organic fluorine does not identify a specific PFAS compound; batch/size/sample variability needs deeper investigation.

Exact product identity

Technical detail — Exact product identity

Canonical Product Name: Kudos Diapers
Category: Diapers
Region: United States
Brand: Kudos
Market Status: current
Exact Variant: Disposable diaper; size-specific SKUs
Package Generation: Current manufacturer disclosure

Formulations, ingredients & materials

Technical detail — Formulations, ingredients & materials

Formulation Id
KUDOS-CURRENT-MFR
Status
probably_current
Region
United States
Variant
Kudos Diaper
Materials
- Component
  Skin-facing topsheet
  Material
  100% U.S.-sourced cotton
  Function
  Skin-contact liner
  Skin Contact
  Yes
  Source Ids
  Kudos (KUD-S1)
- Component
  Acquisition layers
  Material
  Polyethylene / PET
  Function
  Fluid acquisition/distribution
  Skin Contact
  No
  Source Ids
  Kudos (KUD-S1)
- Component
  Absorbent core
  Material
  TCF/FSC cellulose pulp + sodium polyacrylate (SAP)
  Function
  Absorbency
  Skin Contact
  No
  Source Ids
  Kudos (KUD-S1)
- Component
  Breathable film
  Material
  Polyethylene
  Function
  Leak barrier / breathable film
  Skin Contact
  No
  Source Ids
  Kudos (KUD-S1)
- Component
  Outer cover
  Material
  Polyethylene / polypropylene
  Function
  Outer cover
  Skin Contact
  No
  Source Ids
  Kudos (KUD-S1)
- Component
  Other disclosed formulation materials
  Material
  Hydrogenated hydrocarbon resins; hydrotreated mineral oil; titanium dioxide; styrene/isoprene copolymer; hydrogenated styrene/butadiene copolymer; polyurethane; calcium carbonate; VP/VA copolymer; ethylene/acrylic copolymer; bromocresol green; possible pigments
  Function
  Adhesives, pigments, elastics, wetness indication and structural functions
  Skin Contact
  Not recorded
  Source Ids
  Kudos (KUD-S1)
Source Ids
- Kudos (KUD-S1)

Testing: methods, samples & results

Organic fluorine was detected in this Size 4 sample. The screen does not identify which fluorinated compound(s) caused the signal. (5 tests recorded — see the technical detail below for every result.)

Technical detail

Test Category
organic_fluorine_screen
Interpretation
Organic fluorine was detected in this Size 4 sample. The screen does not identify which fluorinated compound(s) caused the signal.
Exact Product
Kudos Size 4 diaper sample
Test Id
KUDOS-MAMAVATION-SIZE4-A
Organization
Mamavation
Analytes
- Analyte
  Organic fluorine - inside
  Result
  48
  Unit
  ppm
  Detection Status
  detected
- Analyte
  Organic fluorine - outside
  Result
  53
  Unit
  ppm
  Detection Status
  detected
Limitations
- Not a targeted PFAS identification assay.
Source Ids
- Mamavation (KUD-S2)
Test Category
organic_fluorine_screen
Interpretation
A second Size 4 sample also produced detectable organic fluorine; this does not identify a specific PFAS.
Exact Product
Second Kudos Size 4 diaper sample
Test Id
KUDOS-MAMAVATION-SIZE4-B
Organization
Mamavation
Analytes
- Analyte
  Organic fluorine - inside
  Result
  16
  Unit
  ppm
  Detection Status
  detected
- Analyte
  Organic fluorine - outside
  Result
  19
  Unit
  ppm
  Detection Status
  detected
Limitations
- Not a targeted PFAS identification assay.
Source Ids
- Mamavation (KUD-S2)
Test Category
organic_fluorine_screen
Interpretation
Detectable organic fluorine reported; exact sample identity needs re-verification before public-facing use.
Exact Product
Another tested Kudos diaper; exact size needs re-verification
Test Id
KUDOS-MAMAVATION-OTHER
Organization
Mamavation
Analytes
- Analyte
  Organic fluorine - inside
  Result
  18.5
  Unit
  ppm
  Detection Status
  detected
- Analyte
  Organic fluorine - outside
  Result
  19
  Unit
  ppm
  Detection Status
  detected
Limitations
- Exact size/sample identity must be rechecked.
Source Ids
- Mamavation (KUD-S2)
Test Category
organic_fluorine_screen
Interpretation
A Size 5 sample was reported non-detect, showing sample/size variability and reinforcing the need not to generalize one test across all production.
Exact Product
Kudos Size 5 diaper sample
Test Id
KUDOS-MAMAVATION-SIZE5
Organization
Mamavation
Analytes
- Analyte
  Organic fluorine
  Result
  Non-detect
  Unit
  ppm
  Detection Status
  not_detected_above_reporting_capability
Limitations
- Exact inside/outside result formatting should be transcribed from underlying report.
Source Ids
- Mamavation (KUD-S2)
Test Category
total_organic_fluorine
Interpretation
Manufacturer-sponsored Vartest testing reportedly found no detectable Total Organic Fluorine. This conflicts with Mamavation organic-fluorine screening results and must be preserved as conflicting analytical evidence rather than replacing either result.
Exact Product
Kudos Size 4 diaper
Test Id
KUDOS-VARTEST-SIZE4-TOF
Organization
Kudos / Vartest
Laboratory
Vartest
Method
Total Organic Fluorine; exact analytical method identifier and reporting limit still need transcription from signed report
Analytes
- Analyte
  Total Organic Fluorine
  Result
  Manufacturer reports non-detect
  Unit
  Not recorded
  Reporting Limit
  Not yet transcribed
  Detection Status
  manufacturer_reported_not_detected
Limitations
- Underlying signed Vartest report still needs full method, unit, reporting limit, sample identity and numerical-result transcription.
- Funding/sponsorship and sampling provenance differ from the Mamavation testing.
Source Ids
- Kudos (KUD-TEST-1)

Legal history: allegations & outcomes

Technical detail — Legal history: allegations & outcomes

Case Name: Deng et al. v. Kudos Innovations, Inc.
Docket: 1:24-cv-10845
Court: U.S. District Court for the District of Massachusetts
Filed Date: 2024-04-02
Event Type: complaint_then_reported_settlement/dismissal
Current Status: Complaint filed alleging false marketing/PFAS contamination. A legal-industry summary reports settlement on 2024-06-26 with named plaintiffs' claims dismissed with prejudice and class claims without prejudice; underlying dismissal filing still needs primary-source capture.
Exact Product Scope: Kudos Ultimate Diaper / Kudos diapers
Allegations: Complaint alleged PFAS contamination and false or misleading marketing.
Findings: No court merits finding that Kudos diapers contained PFAS has been established in the current record.
Source Ids: U.S. District Court for the District of Massachusetts / complaint copy (KUD-LEGAL-1)
Thompson Coburn (KUD-LEGAL-2)

Evidence assessment & uncertainty

Technical detail — Evidence assessment & uncertainty

Positive Attributes: Detailed current ingredient/material disclosure.
Cotton skin-contacting topsheet; TCF/FSC pulp disclosed.
Important Concerns: Multiple independent organic-fluorine screens reported detectable ppm-level results in Size 4/other samples, while a Size 5 sample was non-detect.
Conflicting analytical evidence exists: Mamavation reported detectable organic fluorine in multiple samples, while Kudos reports Vartest Total Organic Fluorine testing of Size 4 as non-detect. Underlying methods, reporting limits, sample provenance and signed reports require direct reconciliation.
Uncertainties: Detected organic fluorine does not identify a specific PFAS compound; batch/size/sample variability needs deeper investigation.
Unverified Claims: No entries recorded

Formulation verification

The current package still needs to be matched to this evidence because: Testing results vary across samples/sizes and current package generation must be matched to each test.

Technical detail

Formulation Verification Required: Yes
Reasons: Testing results vary across samples/sizes and current package generation must be matched to each test.
Package Evidence Needed: Current package materials panel, UPC/GTIN, lot code.

Sources & provenance (5)

Source Id
KUD-S1
Title
Kudos Diaper product/material disclosure
URL
https://mykudos.com/products/diaper
Source Type
manufacturer
Organization
Kudos
Publication Date
Not recorded
Update Date
Not recorded
Access Date
2026-09-16
Primary Source
Yes
Exact Product Match
exact
What It Establishes
Current construction and broad ingredient/material list including cotton topsheet, TCF/FSC core and disclosed polymers/pigments.
Limitations
Not recorded
Source Id
KUD-S2
Title
Disposable Diapers & PFAS / fluorine testing investigation
URL
https://mamavation.com/motherhood/diapers-pfas-forever-chemicals.html
Source Type
independent_testing_report
Organization
Mamavation
Publication Date
Not recorded
Update Date
Not recorded
Access Date
2026-09-16
Primary Source
No
Exact Product Match
probable
What It Establishes
Multiple numerical organic-fluorine results for Kudos diaper samples including detected Size 4 results and a non-detect Size 5 result.
Limitations
Organic fluorine is a screening marker and does not identify a specific PFAS compound.
Source Id
KUD-LEGAL-1
Title
Deng et al. v. Kudos Innovations, Inc. complaint
URL
https://mamavation.com/wp-content/uploads/2024/06/Dist.Mass_._1-24-cv-10845_1.pdf
Source Type
court_filing
Organization
U.S. District Court for the District of Massachusetts / complaint copy
Publication Date
2024-04-02
Update Date
Not recorded
Access Date
2026-09-16
Primary Source
Yes
Exact Product Match
exact
What It Establishes
Filed complaint and allegations against Kudos.
Limitations
Allegations are not established facts.
Source Id
KUD-LEGAL-2
Title
PFAS Primer Update: Recent Developments in Consumer Fraud Analysis
URL
https://www.thompsoncoburn.com/insights/pfas-primer-update-recent-developments-consumer-fraud-analysis/
Source Type
credible_secondary_legal_summary
Organization
Thompson Coburn
Publication Date
Not recorded
Update Date
Not recorded
Access Date
2026-09-16
Primary Source
No
Exact Product Match
exact
What It Establishes
Secondary report of settlement/dismissal disposition on 2024-06-26.
Limitations
Underlying dismissal filing should be captured before treating procedural details as fully primary-source verified.
Source Id
KUD-TEST-1
Title
Kudos Diapers & PFAS
URL
https://mykudos.com/blogs/news/kudos-diapers-pfas
Source Type
manufacturer
Organization
Kudos
Publication Date
Not recorded
Update Date
Not recorded
Access Date
2026-09-16
Primary Source
Yes
Exact Product Match
probable
What It Establishes
Kudos states it sent Size 4 diapers to Vartest for Total Organic Fluorine testing and reports non-detect results; manufacturer links a signed report.
Limitations
Underlying signed report should be independently archived/transcribed into the canonical testing record.

Ingredient & material research library · How we assess evidence

Read the category’s editorial sources

Final verdict against our diapers standard

This is the published editorial verdict. Read the formulation caveats and working research above; the imported evidence has not automatically re-scored this product.

Caution Published as Caution under the published standard for diapers, based on the specific, dated findings above. That standard was written before this or any other product on the page was evaluated, and doesn't change to fit a favorite — see the full site-wide standard for how every category is held to the same process.

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