Medik8 Liquid Peptides Multi-Peptide Serum dupe

−77%per oz

Medik8 · $68The Ordinary · $15.89 $19.90

Medik8 Liquid Peptides Multi-Peptide Serum against The Ordinary Multi-Peptide + HA Serum
Fact	Medik8	The Ordinary
Type	✓ Peptide serum, both
Key ingredients	✓ Acetyl hexapeptide-8, ✓ Matrixyl 3000, Copper peptide, ✓ Hyaluronic acid	✓ Acetyl hexapeptide-8, SYN-AKE dipeptide, Pentapeptide-18, ✓ Matrixyl 3000, ✓ Hyaluronic acid
Size	30 ml	30 ml
Per ounce	$67.03 / fl oz	$15.66 / fl oz
Amazon rank	#82 in Facial Serums	#83 in Facial Serums
Sold by	Medik8	Amazon.com

The trade-off

Medik8 adds four more, palmitoyl tripeptide-5, tetrapeptide-21, a copper heptapeptide and heptapeptide-15 palmitate, with panthenol and carnosine, while The Ordinary adds the SYN-AKE dipeptide, a ferment lysate and amino acids.

Liquid Peptides Multi-Peptide Serum costs about $68 for 30 ml ($67.03 / fl oz). The dupe below is The Ordinary Multi-Peptide + HA Serum at $15.89 $19.90, about 77% less per ounce. Each pair is compared on format, finish and key ingredients, including what the dupe doesn't do.

Water-based serum with what Medik8 calls a 30% complex of nine peptides, among them Argireline, Leuphasyl, Matrixyl 3000 and a copper peptide, with hyaluronic acid and panthenol. Morning and evening. 30 ml.

Amazon prices as of Oct 8, 2026, 6:00 PM ET, subject to change: the price on Amazon at checkout is the one that applies.

20% off#83 in Facial Serums on Amazon

Buy the $15.89 dupe See the original

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The dupe, side by side

The original

Medik8

Liquid Peptides Multi-Peptide Serum

$68

$67.03 / fl oz

The dupe

The Ordinary

Multi-Peptide + HA Serum

$15.89 $19.90

$15.66 / fl oz

Cost per fl oz

Original$67.03 / fl oz

Dupe$15.66 / fl oz

$52.11 less at checkout than the original.

What matches

Five of the same peptides in a water-based serum with hyaluronic acid and glycerin: acetyl hexapeptide-8 and pentapeptide-18 for expression lines, palmitoyl tripeptide-1 and palmitoyl tetrapeptide-7 (Matrixyl 3000), and palmitoyl tripeptide-38.

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Questions

What is the best dupe for Medik8 Liquid Peptides Multi-Peptide Serum?

The Ordinary Multi-Peptide + HA Serum at about $15.89. Five of the same peptides in a water-based serum with hyaluronic acid and glycerin: acetyl hexapeptide-8 and pentapeptide-18 for expression lines, palmitoyl tripeptide-1 and palmitoyl tetrapeptide-7 (Matrixyl 3000), and palmitoyl tripeptide-38.

How much cheaper is The Ordinary Multi-Peptide + HA Serum than Liquid Peptides Multi-Peptide Serum?

Liquid Peptides Multi-Peptide Serum costs about $68 for 30 ml, or $67.03 / fl oz. The Ordinary Multi-Peptide + HA Serum works out at $15.66 / fl oz, roughly 77% less per ounce.

Is Medik8 Liquid Peptides worth it?

Liquid Peptides Multi-Peptide Serum costs about $68 for 30 ml, about 4.3 times as much per ounce as The Ordinary Multi-Peptide + HA Serum. The trade-off with The Ordinary: Medik8 adds four more, palmitoyl tripeptide-5, tetrapeptide-21, a copper heptapeptide and heptapeptide-15 palmitate, with panthenol and carnosine, while The Ordinary adds the SYN-AKE dipeptide, a ferment lysate and amino acids. If that doesn't matter to you, the original isn't worth the extra $52.