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Card 346 of 9902026-09-17 issue

Observed arrival · 2026-09-17

GHK-Cu, with the footnotes left in

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Editorial interest 78/100 Selection signal · not a rating of the site

A research reference for GHK-Cu covering its chemistry, properties, storage questions, cosmetic use, and a concentration calculator.

Landing page captured for the 2026-09-17 issue.

Field notes

The reference combines chemical identifiers, physical-property notes, source links, and separate sections for research, purity, FAQ, and handling. Its strongest editorial feature is its treatment of evidence boundaries: a 60-degree-Celsius forced-degradation test is explicitly not presented as a storage recommendation, and collective cosmetic-use figures are not silently recast as measurements for GHK-Cu itself. A linked calculator and certificate-of-analysis guide extend the site beyond a static compound profile.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use

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Landing page observed 2026-09-17. The live site may have changed.