Side-by-side comparison

The Inkey List Niacinamide Serum vs The Ordinary Matrixyl 10% + HA

Both are serums, but their key treatment ingredients don't overlap: The Inkey List Niacinamide Serum is built around Niacinamide, while The Ordinary Matrixyl 10% + HA is built around Matrixyl 3000 and Matrixyl Synthe'6.

1Shared hero active
The Inkey List
SerumBudgetMorning or evening
OilinessCongestionDark Spots

A 10% niacinamide serum with added hyaluronic acid for oil control and blemish support. A clean, affordable single-active option; broadly comparable to other 10% niacinamide serums with a slightly more hydrating base.

The Ordinary
SerumBudgetMorning or evening
Fine LinesDehydrationDullness

A focused peptide serum pairing Matrixyl 3000 and Matrixyl synthe'6 with hyaluronic acid for expression lines. A gentle, fragrance-free peptide step that layers under moisturiser; subtle, cumulative smoothing.

The verdict

Which should you choose?

These do different jobs. The Inkey List Niacinamide Serum relies on Niacinamide, while The Ordinary Matrixyl 10% + HA relies on Matrixyl 3000 and Matrixyl Synthe'6. The Inkey List Niacinamide Serum is the better fit for oiliness, congestion and dark spots; The Ordinary Matrixyl 10% + HA for fine lines, dehydration and dullness. Both sit in the Budget price tier.

The overlap

What they share

This hero active appears in both formulas:

Hyaluronic Acid
The formulation

Ingredient stacks, side by side

The Inkey List Niacinamide Serum — top of the list

  • Aqua~50–80%
  • Niacinamide~5–25%
  • Glycerin~3–10%
  • Sodium Hyaluron…~2–6%
  • Pentylene Glycol~1.5–4%

The Ordinary Matrixyl 10% + HA — top of the list

  • Aqua~50–80%
  • Glycerin~5–25%
  • Palmitoyl Tripe…~3–10%
  • Palmitoyl Tetra…~2–6%
  • Palmitoyl Tripe…~1.5–4%

● marks ingredients that appear near the top of both lists. Percentages are positional estimates from INCI order, not disclosed doses.

At a glance

The specs

The Inkey List Niacinamide SerumThe Ordinary Matrixyl 10% + HA
CategorySerumSerum
Price tierBudgetBudget
Best forOiliness, Congestion, Dark SpotsFine Lines, Dehydration, Dullness
Usage notesMorning or eveningMorning or evening
Shared hero activesHyaluronic Acid
Questions

Common questions

Is The Inkey List Niacinamide Serum or The Ordinary Matrixyl 10% + HA better?
They aren't trying to do the same thing, so the better one is whichever matches your goal: The Inkey List Niacinamide Serum for oiliness, congestion and dark spots; The Ordinary Matrixyl 10% + HA for fine lines, dehydration and dullness.
What's the difference between The Inkey List Niacinamide Serum and The Ordinary Matrixyl 10% + HA?
The Inkey List Niacinamide Serum's hero actives are Niacinamide and Hyaluronic Acid. The Ordinary Matrixyl 10% + HA's are Matrixyl 3000, Matrixyl Synthe'6 and Hyaluronic Acid.
Are The Inkey List Niacinamide Serum and The Ordinary Matrixyl 10% + HA dupes for each other?
No. Their key active ingredients don't overlap (Niacinamide in The Inkey List Niacinamide Serum; Matrixyl 3000 and Matrixyl Synthe'6 in The Ordinary Matrixyl 10% + HA), so swapping one for the other changes what your routine does.
Can I use The Inkey List Niacinamide Serum and The Ordinary Matrixyl 10% + HA together?
Usually, yes. Apply the thinner texture first, then the thicker one, and patch-test when introducing anything new.
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