La Roche-Posay
Hyalu B5 Pure Hyaluronic Acid Serum
A hydrating serum by La Roche-Posay — featuring Adenosine (helps smooth fine lines) and Acetyl Glucosamine (brightens).
32 of 32 ingredients identified
Informational only — check the packaging and a professional for advice.
Actives combined with exfoliation
This formula pairs active ingredients with exfoliation. Introduce gradually and watch for sensitivity.
Contains fragrance
Fragrance is a common trigger for sensitivity and irritation in reactive skin.
Category breakdown
Solvent / vehicle · 7Other · 5Humectant · 4Soothing · 3Emollient · 3Surfactant · 2Active · 2Antioxidant · 2Preservative · 2Exfoliant · 1Fragrance · 1
Relationships
Works well together
Glycerin + Hyaluronic AcidSodium Hyaluronate + GlycerinAlgin + Xanthan GumAlgin + GlycerinAdenosine + Hyaluronic AcidHydroxyacetophenone + TocopherolAcetyl Glucosamine + Hyaluronic Acid
Full ingredient breakdown
2
A gold-standard humectant that draws water into the skin.
5
Pro-vitamin B5 that soothes and hydrates.
9
Extract from the leaves of Alpinia galanga (greater galangal), a ginger-family plant. Used in La Roche-Posay's Hyalu B5 for its soothing and skin-conditioning properties.
12
An isolated active from centella with strong soothing effects.
14
An acetylated form of sodium hyaluronate with enhanced surface-binding properties that provides long-lasting, film-forming hydration.
15
The salt form of hyaluronic acid; penetrates more readily.
17
A nucleoside used at low concentrations to help smooth the look of fine lines; a common K-beauty anti-aging active.
20
A humectant that can hold many times its weight in water.
21
A multifunctional antioxidant that calms skin and enhances the performance of preservative systems.
24
An AHA most often used in small amounts to adjust pH.
26
An amino-sugar (a hyaluronic acid building block) that helps fade uneven pigmentation and supports skin hydration. Pairs well with niacinamide for tone.
30
Vitamin E; a lipid-soluble antioxidant that also conditions skin.