Side-by-side comparison

La Roche-Posay Hyalu B5 Hyaluronic 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 and Panthenol, so texture, price and the rest of the formula decide it.

2Shared hero actives
La Roche-Posay
SerumMid-rangeMorning or evening
DrynessDamaged Barrier

Two molecular weights of hyaluronic acid with panthenol and madecassoside. Designed for visible fine-line plumping on dehydrated skin — works best on damp skin sealed with moisturiser. Fragrance-free.

The Ordinary
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.

The verdict

Which should you choose?

Both lean on Hyaluronic Acid and Panthenol for hydration and support. La Roche-Posay Hyalu B5 Hyaluronic Acid Serum adds Centella Asiatica. On price, The Ordinary Hyaluronic Acid 2% + B5 is the less expensive option (Budget versus Mid-range).

The overlap

What they share

These hero actives appear in both formulas:

Hyaluronic AcidPanthenol
The formulation

Ingredient stacks, side by side

La Roche-Posay Hyalu B5 Hyaluronic Acid Serum — top of the list

  • Aqua / Water~50–80%
  • Glycerin~5–25%
  • Propanediol~3–10%
  • Sodium Hyaluro…~2–6%
  • Hyaluronic Acid~1.5–4%
  • Panthenol~1–2%
  • Madecassoside~1–2%
  • Tromethamine~1–2%
  • Propylene Glycol~1–2%

The Ordinary 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%

● 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

La Roche-Posay Hyalu B5 Hyaluronic Acid SerumThe Ordinary Hyaluronic Acid 2% + B5
CategorySerumSerum
Price tierMid-rangeBudget
Best forDryness, Damaged BarrierDryness, Damaged Barrier
Usage notesMorning or eveningMorning or evening
Shared hero activesHyaluronic Acid and Panthenol
Questions

Common questions

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