ghk-cu recommended dosage for humans Injectable GHK-Cu: Beginner's Guide to Copper Peptide Unlocking the Benefits of GHK-Cu:

While Lipotropic (MIC)+B12 is generally well-tolerated, any injectable supplement can cause mild, temporary side effects

The key is that peptides work with your body's natural processes

Cyanocob 250 is especially useful in animals showing lethargy, reduced performance, digestive disturbances or post-illness weakness

Environmental Science & Technology, 54(4): 21822191 Soczyska K, Orzel J, Murzyn A, Popiol J, Gunia-Krzyzak A, Koczurkiewicz-Adamczyk P, Pekala E (2023)

Those are legitimate cosmetic goals, but the ingredient should be positioned as part of a complete formula rather than a guaranteed wrinkle remover or a substitute for medical treatment