💙 GHK-Cu · user-POV breakdown
GHK-Cu is the peptide that everyone in skincare quietly uses but doesn't talk about. tripeptide bound to copper · 50+ years of literature · still treated like a 'new' ingredient because the patent expired so nobody markets it. this is the user POV version. peppudex has the science-card version.
what it does (plain english)
drives ur fibroblasts to make collagen + elastin · the proteins that make skin look young.
drives ur fibroblasts to make glycosaminoglycans · the molecules that hold water in skin (hydration).
activates wound healing pathways · which is why scars fade with topical use.
downregulates skin inflammation · so redness chills out.
topical vs subq
topical · works at 0.1-2% concentration · u get maybe 0.5% bioavailable through skin. it's the la mer / skinceuticals / the ordinary territory.
subq · research-grade dose, full bioavailability. THIS is what the published studies use.
if u're cost-optimizing and want results in skin · subq.
if u just want better moisturizer · topical works fine.
what i'd warn u about
vial photosensitivity · wrap in foil.
copper tint if u overdose topical · just wipe.
buying from random vendors · CoA + lab name is non-negotiable. i source from peppu.studio because every CoA names the testing lab.
quick answers
what's the difference between GHK-Cu and GHK?
GHK is the free tripeptide. GHK-Cu is the copper-bound form. the copper is what catalyzes the synthesis · without it u're just running a peptide ligand.
can i use it with retinol?
yes, just space them. retinol pm, GHK-Cu am OR alternate nights. they don't directly conflict.
how long until i see results?
pores · 3-4 weeks. fine lines · 6-8 weeks. scar fading · 12+ weeks. dose-dependent.
research reference
compound deep-dives on peppudex · evidence grades + mechanism + sources:
also in the diary
what i actually use 💖
source on peppu.studio →research-use only · everything below is for laboratory use, not for human consumption · diary content reflects research-protocol logs, not medical advice 💖