There arent direct clinical comparisons yet, so "better" depends on your skin goals and tolerance, but GHK-Cu is often used as an alternative to retinol
10.1080/10715760802317663 [DOI] [PMC free article] [PubMed] [Google Scholar] 64.Mar M, Morales A, Colell A, Garca-Ruiz C, Fernndez-Checa JC
Growth hormone therapy: Research suggests that growth hormone therapy has been used to improve growth in short children who were born small for gestational age (SGA) [9]
Within months, I regained strength and range that typically takes over a year
Additionally, pyridoxine (B6), folate (B9), and cobalamin (B12) are indispensable coenzymes for the methylation of homocysteine to methionine, a process critical to nervous system function
All references to CJC-1295 herein are references to CJC-1295 with the added DAC technology developed by ConjuChem