Quick answer: the closest dupe for the La Roche-Posay Hyalu B5 Hyaluronic Acid Serum is the The Inkey List Hyaluronic Acid Serum — 85% active overlap, sharing Hyaluronic Acid, Panthenol. One tier cheaper with a closely matched active profile — expect differences in the base, supporting actives and texture. Note the original also carries Centella Asiatica.
Why look for a Hyalu B5 Hyaluronic Acid Serum dupe?
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.
A good dupe isn't about a matching label — it's about matching the hero actives, the ingredients carrying the real work. For this serum that means Hyaluronic Acid, Panthenol, Centella Asiatica. The alternatives below share that profile; where they differ is in texture, supporting ingredients and finish.
Closest alternatives
★ Closest match
The Inkey List
85%
Active overlap
BudgetCheaperHyaluronic AcidPanthenol
Why it works: Built on the same hero actives — Hyaluronic Acid, Panthenol — which is what drives results in a serum.
What's different: One tier cheaper with a closely matched active profile — expect differences in the base, supporting actives and texture. Note the original also carries Centella Asiatica.
Full ingredient analysis →The Ordinary
85%
Active overlap
BudgetCheaperHyaluronic AcidPanthenol
Why it works: Built on the same hero actives — Hyaluronic Acid, Panthenol — which is what drives results in a serum.
What's different: One tier cheaper with a closely matched active profile — expect differences in the base, supporting actives and texture. Note the original also carries Centella Asiatica.
Full ingredient analysis →77%
Active overlap
BudgetCheaperHyaluronic AcidPanthenol
Why it works: Built on the same hero actives — Hyaluronic Acid, Panthenol — which is what drives results in a serum.
What's different: One tier cheaper with a closely matched active profile — expect differences in the base, supporting actives and texture. Note the original also carries Centella Asiatica.
Full ingredient analysis →SKIN1004
70%
Active overlap
BudgetCheaperCentella Asiatica
Why it works: Built on the same hero actives — Centella Asiatica — which is what drives results in a serum.
What's different: One tier cheaper with a closely matched active profile — expect differences in the base, supporting actives and texture. Note the original also carries Hyaluronic Acid, Panthenol.
Full ingredient analysis →70%
Active overlap
Mid-rangeHyaluronic Acid
Why it works: Built on the same hero actives — Hyaluronic Acid — which is what drives results in a serum.
What's different: Similar price, so compare on the base, supporting actives and texture rather than cost. Note the original also carries Panthenol, Centella Asiatica.
Full ingredient analysis →Haruharu Wonder
66%
Active overlap
BudgetCheaperHyaluronic Acid
Why it works: Built on the same hero actives — Hyaluronic Acid — which is what drives results in a serum.
What's different: One tier cheaper with a closely matched active profile — expect differences in the base, supporting actives and texture. Note the original also carries Panthenol, Centella Asiatica.
Full ingredient analysis →Common questions
What is the best dupe for the La Roche-Posay Hyalu B5 Hyaluronic Acid Serum?
The closest alternative in our catalogue is the The Inkey List Hyaluronic Acid Serum, which shares Hyaluronic Acid, Panthenol and scores 85% on active-ingredient overlap. One tier cheaper with a closely matched active profile — expect differences in the base, supporting actives and texture. Note the original also carries Centella Asiatica.
Are Hyalu B5 Hyaluronic Acid Serum dupes really as good as the original?
A dupe matches the hero actives — the ingredients doing the measurable work — but rarely the full sensory experience. Texture, fragrance, supporting ingredients and exact concentrations differ, so treat a dupe as a value-led alternative rather than an identical copy.
How does Skin Stacker choose Hyalu B5 Hyaluronic Acid Serum dupes?
We match products in the same category (serum) that share hero actives (Hyaluronic Acid, Panthenol, Centella Asiatica), then rank by overlap and price. Matches are based on published INCI lists, not lab assays.
Compare them yourself
Skin Stacker is independent and receives no payment from any brand. "Dupe" matches are based on publicly disclosed INCI lists and shared hero actives — not on side-by-side lab testing. A shared active profile does not guarantee an identical experience: texture, fragrance, supporting ingredients and concentrations all differ. Formulations change — always re-check the current label before buying.