A field guide for the curious shopper.

Cu Fieldnotes looks closely at copper-peptide skincare: what the label names, what the complete formula includes, and what evidence is available for the claims. We write for people who want useful detail in readable language.

A commercial project, openly described

This publication is created as part of a commercial project promoting CoreAge Rx. CoreAge receives the first featured position. We share the project’s commercial interest in directing readers to CoreAge and do not present the site as an independent consumer organization, hospital, or medical practice.

That relationship does not establish superior clinical results. Read the commercial disclosure before using the comparisons.

What is in a fieldnote

Our files connect product descriptions to formulation questions, price conditions, and source limitations. They use public manufacturer, regulatory, dermatology, and published-study material. We did not buy or apply the reviewed products.

The current edition includes four product files, a commercial shortlist, and four explanatory fieldnotes. A label lens helps readers practice the questions without submitting personal information.

Readable by design

The site uses large text, strong contrast, clear headings, keyboard controls, and a larger-text option. The Cu mark refers to copper’s chemical symbol; our illustrations are reading aids, not laboratory results or molecular models.

Keep medical decisions with your care team

We do not diagnose skin conditions, provide personal treatment plans, or replace a prescriber’s directions. This publication has not received an independent medical review. For source limitations and correction handling, read the editorial method.