Contact
One address for everything: support@periodfinder.com. A subject line from the list below gets you a faster answer.
Corrections (we want these most)
Spotted a size range or millilitre figure that doesn't match a brand's current page? Subject line “Correction”, include the brand and a link to the page you're looking at. Verified corrections ship fast and update the row's verified-date - the corrections policy is part of the methodology.
Questions
Anything the FAQ doesn't answer. One note on scope: we can explain the data, but we can't give medical advice - for flow concerns, a clinician is the right reader.
Brands
If we've characterized your product's claims and you have better first-party data (published millilitre figures especially), we'd genuinely like to upgrade your rows to grade A. Subject line “Brand data”.