GHK-Cu topical – noticed mild scalp tingling after a week, normal?

Posted by tracker_jade in Safety & Side Effects - 1 points, 0 comments.

I started using a 1-2 mg/mL GHK-Cu serum on my scalp about ten days ago, applying it each night after washing. Anecdotally, I felt a light tingling sensation that started around day three and has stayed pretty mild since. No redness, no staining, just that brief pins-and-needles feeling that fades after a few minutes.

I’m wondering if others have seen something similar and whether it tends to lessen with continued use or if it’s a sign to cut back. I’ve kept the dose the same and haven’t changed any other products in my routine. Would love to hear if this is just a common early reaction or if I should pause and observe. Thanks for any input.

Community discussion - research and educational context only. Not medical advice.