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Check where a fact comes from

Sources and updates

Product facts come from the maker’s US label and directions. Research and official guidance support the explanations. A date below is the day we last read a rule that can change; it is no promise that your package has the same formula.

316 sources

When sources differ

If the list on your bottle differs from the maker’s page, go by your bottle. We keep an older or different ingredient list apart from the current one, and where a maker doesn’t give an amount, a time or a device detail, we say so rather than guess. Where a manual is stricter than the shop page, we follow the manual. An ingredient match doesn’t tell you a product is safe or that it works.

Mielle’s current Babassu & Mint ingredient list includes squalane and hydrolyzed wheat protein; older Babassu Oil & Mint listings differ. Mielle doesn’t list the size or how often to use it.

PATTERN’s steamer page gives conflicting outlet-temperature figures. We don’t compare steamers by temperature. Team Texture’s controller description conflicts with its title; VEVOR’s manual limits its device to trained professionals.

Product labels and device instructions

Research and official guidance

Makers’ prices and sale offers

Background reading

Our calculations

What the cost example means

Package amount divided by amount per use gives the number of uses. Divide the price paid by those uses to estimate cost per use. The worked examples use illustrative inputs; they are not product prices or recommended doses. Weight is compared with weight and volume with volume.

Dates and corrections

Product facts are read from each product’s own maker page, which is listed above. A label, size or set of directions belongs to that exact formula, so it carries its source rather than a date. Only a regulation shows the date we checked it. A changed formula is never silently swapped in for an older one.

For a changed label, include the exact product name and a public maker link when you contact TheWashDay. How comparisons work explains the selection rules.

Images and reuse

Brand names identify their owners’ products. Product photographs come only from the authorized Amazon image service for an exact matching item. We do not copy maker or competitor photographs. The homepage scene is an original drawing; instructional diagrams are original drawings.

We explain published facts in our own words. Links to research do not grant reuse rights over the article, figures or photographs. In particular, a noncommercial research licence is not permission to republish its images on this site.