Our standard
This is the methodology every product on this site is held to. It's published here, in full, before any category page — so the bar is set once and doesn't move to fit a favorite product.
How a verdict gets made
- The category standard is written and published first. Before any product is named, the disqualifying criteria for that category are decided and posted at the top of the category page.
- Every claim traces to a named source. A regulatory filing, an independent lab report, a peer-reviewed study, or a manufacturer's own published specification — always named, always dated, always linked when a link exists.
- Findings are attributed, not asserted. A negative finding reads like "returned a PFAS detection in 2023 independent lab testing (Source, 2023)" — never a bare "this is toxic." The source and date travel with every claim.
- Affiliate links are chosen last, and never for the avoid tier. A product's tier is decided before anyone checks whether it has an affiliate program at all.
How to read the evidence
Product research separates the exact variant and region, disclosed materials, test methods, certification scope, and unresolved questions. A result for one size or package generation is not automatically a result for every product sold under that brand.
Non-detect means not detected above the method's reporting or detection capability. Targeted PFAS testing, total fluorine, organic fluorine and extractable organic fluorine are different measurements. Preserve the analyte, sample, units and limits when comparing results.
Hazard, exposure and risk are different questions. A hazard associated with an airborne raw material does not establish the same exposure from that material bound inside a finished product. Certification scope and court findings must likewise be read narrowly: certification is not universal proof of safety, and an allegation is not a finding.
Research records are working evidence, separate from published editorial verdicts. When exact product matching or newer evidence remains unresolved, we display the uncertainty. Missing fields remain missing. Source descriptions distinguish manufacturer disclosures, testing reports, certification databases, court records and supporting sources.
Relative price and affiliate availability do not determine the research assessment. Category standards remain available on each category page; comparison tools explain differences without assigning a universal winner.
What this site will not claim
No absolute safety claims appear anywhere on this site: not "100% safe," not "chemical-free," not "zero toxins," not "guaranteed safe." The strongest positive claim made here is "verified clean against our published standard" — a claim about a specific, stated bar, not about the universe of all possible harm.
Findings reflect specific lots, on specific dates
Findings on this site reflect the specific products, lots, and formulations examined on the dates cited. Manufacturers change formulations and suppliers without notice; a result reported for one lot does not guarantee the same result for another. Check the "last reviewed" date and the cited source before relying on any finding.
How ingredients are rated
The ingredient glossary rates each entry honestly rather than uniformly alarmingly: some ingredients are rated "avoid entirely," some "generally fine at the levels typically used," and some are marked as genuinely unsettled evidence. A glossary that rates everything as terrifying is worthless, and this one doesn't.
What this site is not
This is not medical advice — see the disclaimer in the footer of every page. It's also not exhaustive: absence from this site means a product hasn't been reviewed yet, not that it has passed.