The digital field guide · 42 pages
The serum aisle, decoded.
The Skin Edition from peptides³ is a masterfully researched guide to every peptide worth knowing: what each one does, what it pairs with, and which bottles actually deliver it. Read it once and never waste money on marketing again.
GHK-Cu · carrier peptide
Signals collagen synthesis, p. 33
The peptide market runs on confusion. Brands rename the same molecule, under-dose the formula, and charge for the story. The fix isn't another serum. It's knowing how to read.
Contents · 42 pages
What's inside
Eight chapters, front to back in two evenings. Or jump straight to the routines and work backwards.
- 01p. 5
Why the market is broken
The trade name problem, how underdosing stays invisible, and why the influencer layer exists.
- 02p. 7
How skin actually ages
The ECM, collagen, MMPs, and fibroblast senescence. The biology behind every claim.
- 03p. 10
The four things peptides can do
Signal upregulation, cofactor delivery, muscle dampening, and degradation blocking, organised by mechanism.
- 04p. 13
The molecules worth knowing
10 individual breakdowns: GHK-Cu, Matrixyl, Matrixyl 3000, Argireline, Leuphasyl, SYN-COLL, and more.
- 05p. 21
Reading any label like a formulator
The two-minute protocol for evaluating any peptide serum you have never seen before.
- 06p. 24
What you're competing against
Where peptides sit in the honest evidence hierarchy below retinoids, vitamin C, and SPF.
- 07p. 27
Pairings, conflicts, and sequencing
12 combinations that work, 6 to avoid, and the universal sequencing rule for your routine.
- 08p. 31
Building your protocol
AM/PM frameworks for anti-aging, expression lines, and barrier repair by skin type and concern.
- +p. 34
Appendix: 60 serums, graded
Every notable peptide serum evaluated for identity, dose, formulation vehicle, and value. No brand paid to appear.
The science
Written from the evidence, not the marketing.
18 studies cited
Every claim in the guide traces back to peer-reviewed research, referenced by page, so you can check our work.
Concentration thresholds
The exact percentage at which each peptide has shown results in trials, so you can spot under-dosed formulas instantly.
Zero sponsorships
No brand paid to appear in the product index. Grades are based on formulation, concentration, and price per use.
Reader notes
2,300 readers, one refrain
I've worked the counter for nine years and I'm handing this to clients. The pairing tables alone end the copper-vs-vitamin-C debate I have every week.
I returned a $90 serum after chapter six. The INCI chapter paid for the guide before I'd finished reading it.
Finally something between an influencer's hot take and a journal paper. Rigorous, but I actually finished it in two evenings.
From chapter three
“GHK-Cu doesn't care what the bottle costs. It only cares whether it's actually there.”
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Edition 01 · 42 pages
The Skin Edition
$39.99$59.99launch price
- The 42-page guide (PDF, all devices)
- AM/PM protocol frameworks by skin type and concern
- Product appendix: 60 peptide serums, graded
- Pairing and conflict reference tables
- Lifetime updates to every future edition
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Before you buy
Questions, answered
Edition 02 · Also in the library
The Fitness EditionBPC-157, TB-500, GH secretagogues & 20 more
Your skin deserves better than guesswork.
One evening of reading. A lifetime of never being fooled by an ingredient list again.
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