Happy Tuesday!
Today I dropped my full GHK-Cu masterclass, and it's live right now on YouTube and Spotify.
Watch on YouTube: https://youtu.be/XyrvfLGqooE
Listen on Spotify: https://open.spotify.com/episode/7do35gRUjSEe2UJc9XiPK5?si=_y1k8-AoSW2yDUVkkVeJsQ
GHK is one of my favorite peptides and easily one of the most versatile.
Most people write it off as a beauty peptide and stop there, but by the end of the masterclass you'll see how much more it actually does.
Mechanisms
GHK is small and light for a peptide, around 340 daltons, which is why it works so well transdermally.
The Cu stands for copper. GHK grabs onto copper and becomes the active molecule, GHK-Cu.
Think of GHK as a shuttle. It carries copper exactly where your body needs it.
Loose copper floating around your body is toxic. GHK delivers it safely and doesn't leave the free copper behind.
GHK is endogenous. Your body already makes it. Your levels just drop about 80% between age 20 and 60.
The decline tracks with worse skin, slower wound healing, and lower quality tissue over time.
I like to think of GHK as a building maintenance crew doing two jobs at once.
First, it delivers the raw materials.
Copper switches on three key enzymes. Lysyl oxidase cross-links collagen and elastin, which gives skin its firmness and spring.
Superoxide dismutase, or SOD, is one of your main internal antioxidants. Cytochrome c oxidase helps your cells make energy, otherwise known as ATP.
Second, it sends the instructions.
GHK shifts the activity of roughly 4,000 human genes toward a younger, healthier cell.
Repair genes and antioxidant genes go up. Inflammation and tissue-destruction genes go down.
It modulates around 31% of human genes by 50% or more. Almost a third of your genome is nudged in a better direction.
Benefits
Most people know GHK for skin. It has the longest cosmetic track record of any peptide out there.
But it does a lot more than that.
It quiets inflammation. It stimulates fibroblasts, the cells that build collagen. It coordinates tissue remodeling and recruits repair cells to the area.
This makes it different from BPC-157 and TB-500, which are your soft tissue injury workhorses. They work through local signaling and getting cells to migrate to the injury.
GHK's real benefit is matrix remodeling and gene modulation, which is exactly why it pairs so well with those two instead of replacing them.
Documented effects show up in skin, hair, wounds, bone, nerve, lung, and brain.
Here's who tends to benefit most:
Anyone with aging skin, usually 30s and up
Recovery-focused athletes who want tissue to rebuild faster, since GHK covers the extracellular matrix layer that BPC and TB-500 don't
Post-surgical and wound recovery
Early-stage hair loss, and I mean early stage
Longevity-minded people interested in the gene data
People recovering from lung issues
Practical Applications
Here are the areas I see GHK applied best.
Longevity and anti-aging, 1 to 2mg per day.
Athletic recovery, 1 to 2mg per day stacked with BPC and TB-500.
Post-surgical, 1 to 2mg per day subQ, plus a 1 to 2% topical on the wound once it's closed, twice daily to help with scarring.
Skin aging, 1 to 2mg per day subQ plus the 1 to 2% topical twice daily.
Hair regrowth, topical plus microneedling. A 1 to 2% solution at 0.5 to 1mm depth, weekly to biweekly.
Cognitive, this one's interesting. Go intranasal at 1 to 2mg. In a University of Washington mouse study, the nasal route beat injections for memory and learning. That's rodent data, but it's a cool signal worth knowing.
A quick word on timeline so you know what to expect.
Weeks 4 to 8, you'll see hydration and texture changes from topical, and gradual recovery improvements from injectable.
Weeks 8 to 12, fine lines start showing up better in photos and healing speeds up.
Months 3 to 6, skin firmness, visible hair changes, and the deep structural remodeling that takes the longest.
Dosing
I like to break GHK dosing into three tiers.
Tier 1, general optimization. A 1 to 2% serum once or twice daily, or 1mg injectable a few days a week. This is maintenance and prevention. You can run the topical pretty much year-round.
Tier 2, active performance. 1 to 2mg injectable per day in a 4 to 8 week cycle, paired with topical or microneedling. Great for athletes, hair, and post-surgical recovery.
Tier 3, significant dysfunction. 2 to 5mg per day for chronic wounds, diabetic ulcers, serious post-surgical recovery, or lung issues like COPD and emphysema.
For me, 1 to 2mg is the sweet spot. I don't notice anything at 4 or 5mg that I don't already get at 2mg. Beyond 5 mg daily, you're just wasting money in my opinion.
The standard rhythm is 8 weeks on, 8 weeks off for injectable. You can also run 4 to 6 weeks on with 2 to 4 off, or 30 days on with 14 off.
Topicals are different. You can basically run those continuously.
I'm not as strict about cycling GHK as I am with something like BPC. But I wouldn't inject it every single day for the rest of my life either.
Final Thoughts
Here's where I land on GHK.
By itself, it's not a miracle peptide. It won't fix everything overnight.
But it's genuinely underrated for everything beyond skin.
It really shines when you pair it with other peptides. That's where you get the most bang for your buck.
People call it the ShamWow peptide because it does so many different things while most peptides just stay in their lane.
I'm a fan. It's a regular in my rotation. I use the topicals more than the injectable, but I still reach for the shots when I need them.
The full masterclass goes way deeper than this. I cover reconstitution, injection technique, the Glow stack sequencing, all the pairings, and a long FAQ.
Have a fantastic week, and thank you for supporting my work!
Best,
Hunter Williams