These questions are your armor against ambiguity when you're comparing GHK-Cu vs GHK-Cu Cosmetic
Safety & Human Experience While large-scale clinical trials are pending, human research subjects and real-world users have reported significant improvements in ulcer healing, reflux symptoms, and gut discomfort sometimes in as little as one week
PubMed Marbury, T.C., Flint, A., Jacobsen, J.B., Derving Karsbl, J., & Lasseter, K
While GHK-Cu has anti-inflammatory and wound-healing properties, direct clinical evidence for treating active acne breakouts is limited
In clinical practice, most reactions are related to technique, tissue sensitivity, or formulation not the peptide itself