Side-by-side comparison

First Aid Beauty Ultra Repair Hyaluronic Acid Serum vs The Inkey List Niacinamide Serum

Both serums contain Hyaluronic Acid, but only The Inkey List Niacinamide Serum adds a targeted active: Niacinamide. That's the main thing to weigh.

1Shared hero active
First Aid Beauty
SerumMid-rangeMorning or evening
DehydrationSensitivityDamaged Barrier

A multi-weight hyaluronic acid serum with colloidal oatmeal and ceramide support for sensitive, dehydrated skin. A soothing, fragrance-free hydrator that pairs hydration with barrier comfort.

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 verdict

Which should you choose?

The Inkey List Niacinamide Serum goes further with Niacinamide, which First Aid Beauty Ultra Repair Hyaluronic Acid Serum doesn't have. If you only need Hyaluronic Acid, First Aid Beauty Ultra Repair Hyaluronic Acid Serum covers it; if you want Niacinamide as well, choose The Inkey List Niacinamide Serum. First Aid Beauty Ultra Repair Hyaluronic Acid Serum is the better fit for dehydration, sensitive skin and a damaged barrier; The Inkey List Niacinamide Serum for oiliness, congestion and dark spots. On price, The Inkey List Niacinamide Serum is the less expensive option (Budget versus Mid-range).

The overlap

What they share

This hero active appears in both formulas:

Hyaluronic Acid
The formulation

Ingredient stacks, side by side

First Aid Beauty Ultra Repair Hyaluronic Acid Serum — top of the list

  • Aqua~50–80%
  • Glycerin~5–25%
  • Sodium Hyaluron…~3–10%
  • Hydrolyzed Hyal…~2–6%
  • Avena Sativa Ke…~1.5–4%

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%

● 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

First Aid Beauty Ultra Repair Hyaluronic Acid SerumThe Inkey List Niacinamide Serum
CategorySerumSerum
Price tierMid-rangeBudget
Best forDehydration, Sensitivity, Damaged BarrierOiliness, Congestion, Dark Spots
Usage notesMorning or eveningMorning or evening
Shared hero activesHyaluronic Acid
Questions

Common questions

Is the First Aid Beauty Ultra Repair Hyaluronic Acid Serum or The Inkey List Niacinamide Serum better?
It depends on whether you want Niacinamide. The Inkey List Niacinamide Serum has it; First Aid Beauty Ultra Repair Hyaluronic Acid Serum doesn't. Otherwise both rely on Hyaluronic Acid.
What's the difference between the First Aid Beauty Ultra Repair Hyaluronic Acid Serum and The Inkey List Niacinamide Serum?
First Aid Beauty Ultra Repair Hyaluronic Acid Serum's hero actives are Hyaluronic Acid, Colloidal Oat and Ceramides. The Inkey List Niacinamide Serum's are Niacinamide and Hyaluronic Acid. They also sit in different price tiers (Mid-range versus Budget).
Are the First Aid Beauty Ultra Repair Hyaluronic Acid Serum and The Inkey List Niacinamide Serum dupes for each other?
Only partly. They share Hyaluronic Acid, but The Inkey List Niacinamide Serum's Niacinamide has no counterpart in First Aid Beauty Ultra Repair Hyaluronic Acid Serum.
Can I use the First Aid Beauty Ultra Repair Hyaluronic Acid Serum and The Inkey List Niacinamide Serum together?
Usually, yes. Apply the thinner texture first, then the thicker one, and patch-test when introducing anything new.
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