The Inkey List Polyglutamic Acid Serum vs The Ordinary Hyaluronic Acid 2% + B5
Neither serum relies on a targeted treatment active; both are about comfort and skin support. They share Hyaluronic Acid, so texture, price and the rest of the formula decide it.
A hydration serum using polyglutamic acid, which holds even more water than hyaluronic acid, layered with HA. A lightweight, plumping hydrator that works well over or under HA; an affordable way to trial the ingredient.
A water-based humectant serum combining three molecular weights of hyaluronic acid with a crosspolymer and panthenol. Surface and deeper-layer hydration in one step. Apply to damp skin and seal with moisturiser — on bare dry skin, HA can pull water outward and make things worse.
Which should you choose?
Both lean on Hyaluronic Acid for hydration and support. The Inkey List Polyglutamic Acid Serum adds Polyglutamic Acid. The Ordinary Hyaluronic Acid 2% + B5 adds Panthenol. The Inkey List Polyglutamic Acid Serum is the better fit for dehydration and dullness; The Ordinary Hyaluronic Acid 2% + B5 for a damaged barrier. Both sit in the Budget price tier.
What they share
This hero active appears in both formulas:
Ingredient stacks, side by side
The Inkey List Polyglutamic Acid Serum — top of the list
- Aqua~50–80%
- Glycerin~5–25%
- Polyglutamic Ac…~3–10%
- Sodium Hyaluron…~2–6%
The Ordinary Hyaluronic Acid 2% + B5 — top of the list
- Aqua (Water)~50–80%
- Sodium Hyaluro…~5–25%
- Sodium Hyaluro…~3–10%
- Hyaluronic Acid2%
- Pentylene Glycol~1–2%
● marks ingredients that appear near the top of both lists. Percentages are positional estimates from INCI order, not disclosed doses.
The specs
| The Inkey List Polyglutamic Acid Serum | The Ordinary Hyaluronic Acid 2% + B5 | |
|---|---|---|
| Category | Serum | Serum |
| Price tier | Budget | Budget |
| Best for | Dehydration, Dullness, Dryness | Dryness, Damaged Barrier |
| Usage notes | Morning or evening | Morning or evening |
| Shared hero actives | Hyaluronic Acid | |
Common questions
Is The Inkey List Polyglutamic Acid Serum or The Ordinary Hyaluronic Acid 2% + B5 better?
What's the difference between The Inkey List Polyglutamic Acid Serum and The Ordinary Hyaluronic Acid 2% + B5?
Are The Inkey List Polyglutamic Acid Serum and The Ordinary Hyaluronic Acid 2% + B5 dupes for each other?
Can I use The Inkey List Polyglutamic Acid Serum and The Ordinary Hyaluronic Acid 2% + B5 together?
Related comparisons
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