I Spent 11 Years Writing
the Claims You Believed.
Here's What Was Actually
in the Bottles.

I want to start with something that will sound strange coming from someone who spent over a decade in prestige skincare marketing.

I have never bought a skincare product I fully believed in.

Not once. Not in eleven years of writing copy for some of the most recognizable names in the industry. Not when I was crafting the "clinically proven" language. Not when I was finding the right way to say "peptide-rich formula" without ever specifying what that meant. Not when I was sitting in a product launch meeting, holding a serum that retailed for $140, knowing exactly what the formulation budget had been and doing the math in my head while I smiled and nodded at the campaign brief.

I knew. That's the thing I need you to understand before anything else. The people writing the claims know. The marketing team knows. The brand directors know. The decision to put 5 parts per million of an active into a product and then build a campaign around that active is not an accident or an oversight. It is a business decision, made in a room, by people who understand the FDA's labeling requirements well enough to use them as cover.

I was one of those people. For eleven years.

I left fourteen months ago. And I have been trying to figure out how to say this in public ever since.

That quote is from Karl Lintner — one of the most respected peptide chemists in the cosmetic industry — speaking to the Cosmetic Ingredient Review Expert Panel. He is not a consumer advocate. He is an industry insider. And he is describing, in plain language, exactly what every brand you have ever bought is doing with the peptide they put on the label.

Dr. Zoe Diana Draelos, writing in Dermatology Times, confirmed it from the clinical side: "Due to expense, peptides are used in a concentration of parts per million."

Here is what parts per million means in practice: when you buy a serum that lists "4% Matrixyl 3000" on its packaging, that four percent refers to the peptide complex — the carrier solution. The actual peptide content works out to approximately 4 and 2 parts per million of the two active peptides. That is 0.0004% and 0.0002% of the finished product.

If you have ever stared at an empty bottle and thought: I did everything right. I waited twelve weeks. Nothing moved.

You were not the problem. The dose was the problem.

What a Product Launch Actually Looks Like From the Inside

I want to walk you through something. Not a specific brand — I am not here to burn anyone by name. But a composite of every copper peptide launch I was involved in over the past decade, because the process was almost identical every time.

It starts with the chemist's brief. The formulation team comes back with a cost-per-unit breakdown. There is always a line item for the active the peptide, in this case GHK-Cu and there is always a conversation about that line item. The conversation goes like this: what is the minimum concentration we need to list this as a featured ingredient?

The answer, under current FDA guidelines, is: it just needs to appear on the INCI list in descending order of concentration. There is no minimum. There is no threshold for what "featured" means.

So the active goes in at whatever concentration keeps the cost-per-unit inside the margin target. Sometimes that is 5 ppm. Sometimes 8 ppm. Occasionally, if someone in the room pushes back, it gets to 50 ppm. Still sub-therapeutic. Still pharmacologically inert. But it's on the label, and the label is what the marketing team works from.

Then the brief comes to people like me.

My job was to take the formulation sheet and build a story around the hero ingredient. I was good at this. I knew Pickart's research. I knew the 1973 Nature paper. I knew the plasma GHK-Cu decline from 200 ng/mL at age 20 to 80 ng/mL by age 60. I used all of it. I wrote about "restoring what your skin has lost" and "replenishing the signal your body used to send." I wrote those lines while knowing the concentration in the bottle was nowhere near what Pickart's research actually used.

That is the part I cannot unknow.

I have read that comment. I have read hundreds like it. And I want to say something directly to the woman who wrote it: you are not embarrassed because you are naive. You are embarrassed because the system was specifically designed to get past your intelligence. The claims were written by people who understood exactly where your skepticism lived and exactly how to route around it.

I know because I was in those rooms.

The Specific Deception Around Copper Peptides

GHK-Cu — copper tripeptide-1, the molecule Loren Pickart isolated at UCSF in 1973 — became a marketing category around 2018 when The Ordinary put it in a $32 serum and the skincare community started paying attention. What happened next was entirely predictable to anyone who had been inside the industry for more than five minutes.

Every brand that had a peptide serum quietly repositioned it around copper peptides. Every brand launching a new serum added GHK-Cu to the brief. Not at a concentration informed by Pickart's research. At a concentration informed by the cost-per-unit target and the legal minimum required to feature it on the label.

Here is the specific mechanism of the deception — because I want you to be able to spot it yourself from now on:

The Molecule That Was Used as Decoration

In 1973, a biochemist named Loren Pickart was working at UCSF, studying why aged tissue responded differently to young plasma versus old plasma. When he exposed liver cells from donors aged 60–80 to plasma from young donors, the old cells started producing proteins like young cells. They behaved, measurably, as if they had been reset.

Pickart isolated the signal. A tripeptide — glycine, histidine, and lysine bound to a single copper ion. He called it GHK-Cu. He published it in Nature in 1973. PMID 4354173

He spent the next fifty years studying it. Twenty-nine patents. Forty-six peer-reviewed papers. In a 2014 analysis, his team found that GHK modulated gene expression across 31.2% of the 13,424 human genes analyzed. BioMed Res Intl 2014, doi: 10.1155/2014/151479

Loren Pickart died on December 10, 2023, at age 85. He had watched the cosmetic industry adopt his molecule for decades — listing it on labels, citing his research in marketing materials, and using it at concentrations so far below his documented effective range that the connection to his work was, functionally, decorative.

I wrote that decorative copy. I am telling you this so the weight of it lands correctly.

She guessed correctly. The products did not contain effective doses. What she didn't have was the inside knowledge to know it wasn't a guess — it was a fact the brands already knew and had already accounted for in their margin models.

Now she has it. Now you have it.

What BioGlo Does Differently — From Someone Who Knows What Different Actually Means

I want to be careful here. Because "we're different" is the claim every brand makes. I wrote it myself, in slightly varied forms, for eleven years. So when I tell you BioGlo is different, I want to show you the specific decisions that make it true not ask you to take the word of a former marketing executive who has already told you she spent a decade writing things she didn't believe.

The differences are structural. They are not language choices. They cannot be faked with better copy.

How to Read the CoA Yourself

I am going to teach you something the industry would prefer you not know how to do.

A Certificate of Analysis is a document from a testing laboratory confirming the identity, purity, and concentration of a compound in a given sample. Here is what to look for in BioGlo's — and in any CoA you encounter going forward:

BioGlo's CoA passes all three. I checked each one. Not because I want you to take my word for it, but because I want you to be able to check it yourself and know what you are looking at when you do.

What Happened When I Used It for 12 Weeks

I am going to be as precise about this as I was about everything else.

I started using BioGlo after I found the CoA. PM only, as the conflict guide specifies. No vitamin C in my evening routine. No direct acids in the same slot. I moved my tretinoin to alternating nights.

No twenty years younger. No doctor gasping. No miracle. Measurably less deep lines at week seven, visible density improvement at week four, and a question from my sister at week ten that I have been asked about my skin before only when I was actively deceiving people about what I was using.

This time I was not.

The Pricing — Run the Honest Math

I spent eleven years helping brands price products. I know exactly how this works and I am going to tell you.

Prestige skincare pricing is almost entirely disconnected from formulation cost. A $295 serum does not contain $295 worth of ingredients. It contains the margin required to support the retail markup, the influencer budget, the Sephora gondola placement fee, the PR agency retainer — plus the formulation, which in the copper peptide category is almost always the smallest line item in the budget.

If you have spent $90 on NIOD, $32 on The Ordinary, and $52 on Paula's Choice, you have spent $174 on sub-therapeutic concentrations. Seventy-five dollars on a verified 2% is not a gamble. It is the first time the formulation cost is proportional to the claim on the label.

I know what things cost to make. BioGlo's price is consistent with a product that actually contains what it says it contains. That is not something I could have said about most of what I was paid to sell.

The Guarantee — Why 90 Days Matters

A 30-day guarantee on a copper peptide serum is a brand betting you will not see results before the return window closes. I know it because I have been in the room where return window decisions get made, and the conversation is always about minimizing returns not about giving customers enough time to evaluate honestly.

GHK-Cu compounds over twelve weeks. A brand that gives you thirty days on a twelve-week active is doing arithmetic that benefits them, not you.

BioGlo offers 90 days. Every dollar back if it doesn't work. No questions. No forms. The framing: GHK-Cu takes twelve weeks, here are ninety days, because that is when the science says you will see it. If you don't, you get refunded completely. Because a product that didn't work doesn't deserve your money.

That last sentence is one I never wrote for anyone I worked for. It is the only sentence about a guarantee I have ever read that I actually believed.

My Honest Recommendation

I am not going to tell you this product is for everyone. I spent eleven years telling people products were for everyone and I am done with that.

Read the CoA before you buy. It is on the product page. You do not need to take my word for this, or BioGlo's word, or anyone else's. The document exists. The lab exists. The concentration figure is there. Check it yourself.

Then, if it checks out — and it will — give it ninety days.

I spent eleven years helping the industry avoid that kind of accountability. Finding a brand that invites it is not something I was prepared to walk past without saying something.

So here I am. Saying something.