The Journal
Ingredient education.
Written by our founders — two cosmetic chemists — on the actives, percentages and biotechnology behind every TRADEMARK HER formula.
Formulated to work, not to sell
Two cosmetic chemists on why every percentage in our skincare is chosen for efficacy — never for marketing.
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What I saw behind the label
Dani, our co-founder and cosmetic chemist, on the factory visits that changed how she sees the skincare industry — and why Trademark costs what it does.
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What plant-derived PDRN actually does
The next-generation active behind visible firmness — decoded.
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Cycle-aware skincare: how skin shifts across the month
Hormones move. Your skin moves with them. Here's how to formulate around it.
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Peptides, decoded: why plant peptides hold their own
What peptides actually do in skin — and why our plant-derived peptides stand alongside the famous lab-made ones.
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Plant stem cells and the new science of skin longevity
Why the future of ageing well is grown in a bioreactor — and what that means for your skin.
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Fewer products, better skin: the barrier-first routine
Ten-step routines are over. Here's the simple, high-performance ritual our chemists actually recommend.
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The real cost of great skincare
Quality ingredients aren't cheap. But premium skincare shouldn't cost a fortune — here's how we price ours.
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Natural on the front, phenoxyethanol on the back
Why a common synthetic preservative doesn't belong in skincare sold as natural — and how to check your own labels.
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