GHK-Cu eye cream performed better than vitamin K cream
For example: Fatigue, unexplained weight loss, or abdominal pain may indicate liver disease or cancer Easy bruising, night sweats, or feeling full quickly (early satiety) may suggest a myeloproliferative disorder Swelling in the legs, reduced urine output, or persistent nausea may point to kidney disease In cases of very high B12 from injections (not oral supplements), some people have reported headache, nausea, diarrhea, facial flushing, or skin rash
A 12-week study on 71 women using GHK-Cu cream showed progressive improvement in collagen, with 70% of participants responding positively compared to 50% with vitamin C and 40% with retinoic acid (Pickart et al., 2015)
Chin Med 18:100 Akdi M (2009) Mechanisms of allergic inflammation
Jun 2017;32(6):501-510