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Yes, both GHK-Cu and AHK-Cu are legal peptides and safe to use in topical serum formulations like this one.
No known side effects when used as directed. Avoid overuse or applying to broken skin.
Combining both is extremely rare, this is the first known product (from Neurogan Health) to deliver them together in a 1:1 topical spray.
Each spray delivers an estimated dose with a 1:1 ratio of GHK-Cu to AHK-Cu, though exact mg per spray may vary slightly due to the spray cap.