The digital field guide · 124 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 · 124 pages
What's inside
Eight chapters, front to back in two evenings. Or jump straight to the routines and work backwards.
- 01p. 7
The peptide primer
What a peptide actually is, and why chain length decides everything.
- 02p. 19
Signal peptides
Matrixyl and friends — the molecules that ask your skin for more collagen.
- 03p. 33
Carrier peptides
The GHK-Cu deep dive. Why the blue serum earns its reputation.
- 04p. 47
Neurotransmitter inhibitors
Argireline and the honest truth about “Botox in a bottle.”
- 05p. 59
Enzyme inhibitors
The quiet category that protects the collagen you already have.
- 06p. 71
Reading an INCI list
Decode any ingredient label in under a minute, like a formulator.
- 07p. 87
Pairings & conflicts
What boosts what, what cancels what. Copper and vitamin C, settled.
- 08p. 99
The routines
Complete AM/PM routines by skin type and budget, ready to follow.
- +p. 113
Appendix: 60 products, graded
Every notable peptide serum on the market, scored for concentration, formulation, and price per use.
The science
Written from the evidence, not the marketing.
47 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 · one price
The Skin Edition
$29$49launch price
- The 124-page guide (PDF, all devices)
- AM/PM routine cheat sheets, printable
- Product index: 60 peptide serums, graded
- Pairing & conflict reference tables
- Lifetime updates to every future edition
Delivered by email in under a minute · 30-day money-back guarantee
Before you buy
Questions, answered
Edition 02 · Also in the library
The Performance 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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