Side-by-side comparison

The Ordinary Hyaluronic Acid 2% + B5 vs The Ordinary Marine Hyaluronics

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.

1Shared hero active
The Ordinary
Hyaluronic Acid 2% + B5
SerumBudgetMorning or evening
DrynessDamaged Barrier

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.

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The Ordinary
Marine Hyaluronics
SerumBudgetMorning or evening
DehydrationOilinessDullness

An ultra-light hydrating serum using marine-derived humectants instead of classic hyaluronic acid, for a weightless, almost water-like feel. A good layering hydrator for oily skin that finds HA serums tacky.

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The verdict

Which should you choose?

Both lean on Hyaluronic Acid for hydration and support. Hyaluronic Acid 2% + B5 adds Panthenol. Marine Hyaluronics adds Marine Humectants. Hyaluronic Acid 2% + B5 is the better fit for dryness and a damaged barrier; Marine Hyaluronics for dehydration, oiliness 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

Hyaluronic Acid 2% + B5 — top of the list

  • Aqua (Water)~50–80%
  • Sodium Hyaluro…~5–25%
  • Sodium Hyaluro…~3–10%
  • Hyaluronic Acid2%
  • Panthenol~1.5–4%
  • Pentylene Glycol~1–2%
  • Propanediol~1–2%

Marine Hyaluronics — top of the list

  • Aqua~50–80%
  • Glycerin~5–25%
  • Propanediol~3–10%
  • Amino Esters-1~2–6%
  • Sodium Hyaluron…~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

Hyaluronic Acid 2% + B5Marine Hyaluronics
CategorySerumSerum
Price tierBudgetBudget
Best forDryness, Damaged BarrierDehydration, Oiliness, Dullness
Usage notesMorning or eveningMorning or evening
Shared hero activesHyaluronic Acid
Questions

Common questions

Is The Ordinary Hyaluronic Acid 2% + B5 or The Ordinary Marine Hyaluronics better?
Neither is a treatment product, so it comes down to feel and fit. Both use Hyaluronic Acid; pick on price, texture and the concerns each suits.
What's the difference between The Ordinary Hyaluronic Acid 2% + B5 and The Ordinary Marine Hyaluronics?
Hyaluronic Acid 2% + B5's hero actives are Hyaluronic Acid and Panthenol. Marine Hyaluronics's are Marine Humectants and Hyaluronic Acid.
Are The Ordinary Hyaluronic Acid 2% + B5 and The Ordinary Marine Hyaluronics dupes for each other?
They're similar in role: both rely on Hyaluronic Acid for support rather than a targeted active. Texture and the rest of the formula will still feel different.
Can I use The Ordinary Hyaluronic Acid 2% + B5 and The Ordinary Marine Hyaluronics together?
Usually, yes. Apply the thinner texture first, then the thicker one, and patch-test when introducing anything new.
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1 shared hero active

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