glutathione glycine supplementation Precursors Glycine and aging: Evidence and

309 , R1499R1511 (2015)

Rosenfeld, P

Administration Route by Peptide Type When Injectable GHK-CU Makes Sense The injectable form provides systemic benefits that topical cannot achieve: Whole-body tissue regeneration effects Internal organ support Consistent blood levels Better bioavailability Combined with other injectable peptides When Topical Makes Sense Topical application excels for: Targeted skin treatment Hair and scalp applications Those avoiding injections Combination with skincare routines Localized wound healing For maximum benefit, some protocols use both injectable GHK-CU for systemic effects and topical copper peptides for targeted skin benefits

Being able to digest it and absorb it is important