The copper content of GHK-Cu formulations has been a theoretical safety consideration, given that excessive copper can be toxic - however, the amounts used in cosmetic and research applications are extremely small, the copper is tightly chelated by the peptide (reducing free copper availability), and topical absorption of copper from these products appears minimal and well below levels that would cause systemic copper accumulation or toxicity
Oncologist 8 , 541552 (2003)
circRNAs are a category of newly endogenous non-coding RNA, and they are becoming significant members of the gene regulation environment, the most representative characteristic of which is the covalently closed RNA circle without 5 end caps and 3 poly tails
Boosts energy production and supports healthy aging
Dermatologists often suggest administering the total dosage in multiple sessions rather than taking a single shot for optimal benefits
Does all that it states it does and more