Peptide Serums vs Research Peptides: Why a Store-Bought Serum Is Not the Same Thing

“Peptides” show up on the label of countless skincare products. The same word is also used for lab research compounds. They are not the same thing, and mixing them up leads to confusion.

What cosmetic peptides are

Cosmetic peptides are short amino-acid chains included in creams and serums, usually chemically modified to be stable and to penetrate skin. Common ingredient names include:

• Palmitoyl tripeptide-1: a fatty-acid-modified version of the GHK sequence
• Copper tripeptide-1: the cosmetic name for GHK-Cu
• Acetyl hexapeptide-8: a neurotransmitter-modulating peptide used for expression lines
• Palmitoyl tetrapeptide-7: a signal peptide studied for calming inflammation

How cosmetics differ from research compounds

• Purpose: cosmetics are formulated and tested for the skin surface; research peptides are supplied as pure material for lab experiments
• Concentration: cosmetic products use low, stabilized concentrations; research material is a raw compound
• Regulation: cosmetics follow cosmetic rules; research compounds are sold for laboratory use only, not for human use

Reading an ingredient list

• Ingredients are listed by concentration, highest first
• If “peptide” appears at the very end, the amount is probably small
• Look for the specific peptide name, not just the word ‘peptide complex’

Where the research connects

The research on GHK-Cu is the origin of copper-peptide cosmetics, and the topical GHK-Cu format is made for laboratory studies of skin-surface delivery.

The takeaway

The word is the same, but the context is different. Cosmetic products are for the skin you wear; research peptides are for the lab bench.

Browse the research compounds

See GHK-Cu and Topical GHK-Cu. Every compound is sold for laboratory research use only, and batch-specific lab reports are on the COA page. You can also browse the full shop.

Related reading: how acne forms in four steps, the acne and peptides FAQ and the research library.

This article is educational and summarizes published laboratory research. It is not medical advice. Compounds mentioned are sold for research use only, not for human or veterinary use.

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• Shop all research compounds
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For laboratory research use only. Not for human or veterinary use, and not intended to diagnose, treat, cure or prevent any condition. This article is educational and is not medical advice.