Verdict: The Ordinary Hyaluronic Acid 2% + B5 ($8) is a 78% match dupe for La Roche-Posay Hyalu B5 Hydrating Serum ($45). Full price and ingredient comparison below.
By the BeautyFlow Research Team · Updated July 2026
The Original
Hyalu B5 Hydrating Serum
$45The Dupe
Hyaluronic Acid 2% + B5
$8Curated by BeautyFlow editors
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Ingredient Comparison
Ingredient data coming soon
Frequently Asked Questions
Is The Ordinary Hyaluronic Acid 2% + B5 a good dupe for La Roche-Posay Hyalu B5 Hydrating Serum?
Yes — The Ordinary Hyaluronic Acid 2% + B5 is a 78% match for La Roche-Posay Hyalu B5 Hydrating Serum based on ingredient and formula comparison.
How much cheaper is The Ordinary Hyaluronic Acid 2% + B5 than La Roche-Posay Hyalu B5 Hydrating Serum?
The Ordinary Hyaluronic Acid 2% + B5 costs $8 versus $45 for La Roche-Posay Hyalu B5 Hydrating Serum — a saving of $37.
What is the difference between La Roche-Posay Hyalu B5 Hydrating Serum and The Ordinary Hyaluronic Acid 2% + B5?
The main difference is price — La Roche-Posay Hyalu B5 Hydrating Serum costs $37 more. Formulas are closely matched in our comparison, though packaging and shade ranges may differ. See the full ingredient table on this page for the exact overlap.
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