GHK-Cu has anti-inflammatory properties that can actually help calm reactive skin
The systemic safety profile from any meaningful absorption from a topical preparation is favorable
Plant Cell Physiol 35:539549 Narendra S, Venkataramani S, Shen G, Wang J, Pasapula V, Lin Y, Kornyeyev D, Holaday AS, Zhang H (2006) The Arabidopsis ascorbate peroxidase 3 is a peroxisomal membrane-bound antioxidant enzyme and is dispensable for Arabidopsis growth and development
The review article referenced findings that GHK-Cu modulates thousands of human genes involved in healing and inflammation, tissue remodeling, and antioxidant responses
Some protocols use longer cycles or maintenance dosing
You can always speak with your doctor or nutritionist to find other ways to support healthy vitamin C levels in the body, such as a high-quality vitamin C supplement