The short version

Skin Receipts has two evidence lanes, and they are deliberately not blended.

A review is first-hand reporting. It can describe what happened in one person’s routine. It cannot turn that observation into a population result or a clinical trial.

A guide or label check is researched, not tested. It is built from named sources. We have not used the product, reproduced the study or observed the result. That label is part of the evidence, not a footnote.

Neither lane is a promise that a product will suit you. A first-hand review is closer to a detailed consumer account; a research page is closer to an explanation of what the available evidence says.

For the detailed review, rating and disclosure policy, see our about page. This guide is about the boundary: an observation stays an observation, and a source stays a source.

What a researched page means

This page is researched, not tested. So are our guides and label checks. We do not write “we tried,” “we saw,” or “this worked for us” when the evidence came from a paper or agency page. We say what the source measured, who or what it studied, and what it cannot establish.

That distinction prevents a common category error: applying a study of an isolated ingredient, one concentration or one vehicle to every finished product that lists the ingredient. It also prevents a personal report from being framed as evidence that the same result will happen for everyone.

A consumer spot test is not a diagnosis

The American Academy of Dermatology describes applying a normal amount to a small spot twice daily for 7–10 days as a way to help predict a negative reaction. It says to wash the product off and not use it again if the area becomes red, itchy or swollen. AAD also notes that some ingredients can cause temporary irritation and that medical patch testing may be needed to identify an allergen.

That is useful consumer guidance, not a sensitivity-and-specificity study. A quiet test spot does not prove that a product cannot irritate the face, eyes or another body area, and it does not rule out every delayed or cumulative reaction.

Formal patch testing answers a different question. DermNet describes diluted allergens being applied, commonly on the back, for 48 hours and read at about 96 hours. It is mainly useful for allergic contact dermatitis, not irritant dermatitis; DermNet says baseline series identify about 70% of contact-dermatitis culprits, not every possible cause. A home repeat-open-application test is not a substitute for that clinical process.

Our claim boundary

When we write a review, we identify it as a personal account. When we write a research page, we identify it as researched, not tested. In either case, we do not diagnose a rash, promise treatment, or tell a reader that a negative test guarantees safety. A persistent, severe or spreading reaction deserves a clinician’s assessment rather than a more elaborate home experiment.

The non-obvious rule behind the whole method is this: FDA’s lack of a universal cosmetic test list and the FTC’s substantiation expectation coexist. FDA says there is no single required test list for every cosmetic, while the FTC says an advertiser needs a reasonable basis before making a claim. No mandated test does not mean no evidence burden; the claim determines what support is relevant.

Sources

Researched, not tested. We did not perform a product test, consumer study or formal patch test for this page. This is general information, not medical or legal advice; seek clinical care for a reaction or wound you are worried about.