Peptides
Unfold with sustained heat
Chains of amino acids, folded into a shape. Heat unfolds them, and an unfolded peptide can't dock where it was designed to dock. The same molecule, doing nothing.
About Khold
Why we make skincare cold
A formula is only as good as the condition its ingredients arrive in. Most of the industry treats the difference as an acceptable loss. We built a company around not accep
1986
Formulating since
Toronto
Made in canada
Zero
Actives exposed to heat
8
Cold-chain steps
The problem
An ingredient list tells you what went in. It doesn't tell you what survived the batch.
Conventional manufacturing runs hot, because hot is fast. Heat is how you get an emulsion to behave and how a batch leaves on schedule. It is also how the three most valuable classes of ingredient in modern skincare quietly stop working. All three still appear on the label afterwards. The potency doesn't.
Proteins and enzymes
Lowest threshold of the three
The same failure, reached sooner. Bigger structures have more to lose and lose it faster. An enzyme that has denatured is no longer an enzyme — it's protein residue on an ingredient list.
Live-culture filtrates
Heat flattens the active fraction
The value isn't the culture, it's what the culture made: enzymes, acids, small proteins. Heat flattens exactly the fraction you were paying for and leaves the name on the label intact.
Cold-Phase Technology™
We keep the heat out
An emulsion base can be built hot — everyone's can. Ours comes down to cold room temperature before a single active goes in.
The ingredients arrive cold too, purified by supercritical fluid extraction, membrane separation and chromatography rather than heat. So when the label says peptides, it means peptides.
Illustrative — thresholds to be confirmed against stability data
Cold-purified inputs
Ingredients arrive cold. Supercritical fluid extraction, membrane separation and chromatography instead of heat.
The base comes down
Anyone's emulsion base can be built hot. Ours is brought to cold room temperature before a single active goes near it.
Actives added cold
No active in a Khold formula is ever exposed to heat, at any point in the process.
Filled and shipped dark
Opaque, light-blocking packaging. Every formula passes heat-stability and freeze-thaw testing in development.
Where it's made
Forty years of formulation isn't a line on an About page. It's the building.
Khold is manufactured by Isomers Skincare Laboratories — our parent company, our family's lab, and the building every Khold formula is made in. Not a contract manufacturer working from a brief, and not a white-label range with a logo on it. My parents have been formulating here since 1986.
Manufacturer
Isomers Skincare Laboratories
Founded
1986, Toronto
Address
105 Tycos Drive, Toronto
Process
Cold-Phase Technology™
Our standards
Five things we don't do
Most of what makes a formula good is a decision not to take a shortcut. These are ours, and they're the reason our range is small.
01
We don't heat actives
Not for convenience, not to hit a production date, not for a single batch. It's the constraint the whole company is built around, and the reason some formulas take us longer than they'd take anyone else.
02
We don't use fragrance
No parfum, no essential oils, nothing included to make a formula smell like something. Scent is the most common reason a product irritates skin, and it's never doing anything for you.
03
We don't outsource manufacturing
Every Khold formula is made in our own lab by people whose name is on the building. Nothing is sent out, nothing is white-labelled, and nothing is made by someone we've never met.
04
We don't make a claim we can't show you
Where our evidence sits on an ingredient rather than a finished formula, we say so on the product page, next to the number. It's a less flattering way to write, and it's the only version worth reading.
05
We don't ship in clear glass
Actives that survive manufacturing still have to survive the shelf. Everything we make goes out in opaque, light-blocking packaging, and every formula is heat-stability and freeze-thaw tested before it does.
“I grew up around skincare manufacturing. My parents have been formulating for forty years, and their lab was the backdrop to my childhood.
Khold started with a question I couldn't let go of. If we know heat degrades the most valuable ingredients in a formula, why is almost all skincare still made hot?
The honest answer is that heat is convenient. Nobody is going to test your serum's potency, and the label reads the same either way. Khold is the version that doesn't take the shortcut.”