Lab test results
We independently verify our batches with a third-party lab for purity of raw materials and concentration of our active ingredients, and screen for heavy-metal contaminants.
Select a product to view its reports.
How we test
Every PLU formula is tested by an independent research lab, the Mass Spectrometry Core at the University of Illinois at Chicago. We confirm two things: that the actives on the label are in the bottle at the strength we claim, and that heavy-metal contaminants stay within cosmetic safety limits.
Our methods
- Active identity and concentration. Each labeled active is confirmed by liquid chromatography and mass spectrometry as the correct peptide, present at 1% or higher, the concentration we formulate to.
- Contaminant screening. Finished products are screened by ICP-MS for the four heavy metals regulators monitor (arsenic, cadmium, mercury, and lead) and compared against established cosmetic safety limits: the FDA’s for lead and mercury, Health Canada and EU benchmarks for arsenic and cadmium.
Tests completed
Blog posts
What Not to Mix With Copper Peptides
Copper peptides can work wonders for your skin and hair, but only if you let them work their magic without anything else getting in the way. Knowing what NOT to mix with copper peptides is just as ...
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AHK-Cu Benefits: 4 Reasons to Add This Copper Peptide to Your Hair Care Ritual
Whether you're dealing with thinning hair or you just want to support your scalp, you need to know about the AHK-Cu benefits. This copper peptide may not get as much hype as GHK-Cu, but it belongs ...
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GHK-Cu Peptide Cost: How Much is GHK-Cu Peptide?
It's no secret GHK-Cu can do some amazing things for your skin. But how much is GHK-Cu peptide, and more importantly, is it really worth adding to your regimen? The GHK-Cu peptide cost depends on h...
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