Side-by-side comparison

La Roche-Posay Hyalu B5 Hyaluronic Acid Serum vs The Inkey List Hyaluronic Acid Serum

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 Inkey List
SerumBudgetMorning or evening
DehydrationDrynessDullness

A multi-weight hyaluronic acid serum with vitamin B5 for layered hydration. A no-frills, affordable HA serum; apply to damp skin and seal with moisturiser to avoid the dryness HA can cause in low humidity.

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. La Roche-Posay Hyalu B5 Hyaluronic Acid Serum is the better fit for a damaged barrier; The Inkey List Hyaluronic Acid Serum for dehydration and dullness. On price, The Inkey List Hyaluronic Acid Serum 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 Inkey List Hyaluronic Acid Serum — top of the list

  • Aqua~50–80%
  • Glycerin~5–25%
  • Sodium Hyaluron…~3–10%
  • Hydrolyzed Hyal…~2–6%
  • Sodium Hyaluron…~1.5–4%
  • Panthenol~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 Inkey List Hyaluronic Acid Serum
CategorySerumSerum
Price tierMid-rangeBudget
Best forDryness, Damaged BarrierDehydration, Dryness, Dullness
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 Inkey List Hyaluronic Acid Serum 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 Inkey List Hyaluronic Acid Serum?
La Roche-Posay Hyalu B5 Hyaluronic Acid Serum's hero actives are Hyaluronic Acid, Panthenol and Centella Asiatica. The Inkey List Hyaluronic Acid Serum'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 Inkey List Hyaluronic Acid Serum 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 Inkey List Hyaluronic Acid Serum together?
Usually, yes. Apply the thinner texture first, then the thicker one, and patch-test when introducing anything new.
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