Why 2% GHK-Cu actually matters.

Preview text: Most "copper peptide" serums contain 0.1-0.5%. Here's what that means for your skin.

Thursday, Nov 5, 2026 at 3:01 AM EasternKlaviyo

Division TwentyWhy 2% GHK-Cu actually matters.

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Subject: Why 2% GHK-Cu actually matters.
Preview text: Most "copper peptide" serums contain 0.1-0.5%. Here's what that means for your skin.
From: hello@divisiontwenty.com
Brand: Division Twenty
ESP: Klaviyo
Sent: Thu Nov 5, 2026, 3:01 AM ET
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