SkinCeuticals HA Intensifier vs Hydrating B5, Compared
Updated Jul 14, 2026
SkinCeuticals
SkinCeuticals HA Intensifier Multi-Glycan | Hyaluronic Acid Serum | 30ml
£120.00
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The Verdict
HA Intensifier is the plumping, firming pick – built around ProXylane and pure hyaluronic acid for loss of facial volume and fine lines. Hydrating B5 is the soothing, barrier-support pick – built around pantothenic acid (Vitamin B5) and natural-moisturising-factor ingredients for dehydration. Choose based on the problem you're solving, not just the shared “hyaluronic acid serum” label.
HA Intensifier vs Hydrating B5: what's the actual difference?
Both are hyaluronic-acid serums from SkinCeuticals’ Hydration range, sold in 30ml bottles – but built for different jobs. HA Intensifier Multi-Glycan pairs 1.3% hyaluronic acid with 12% ProXylane™ for a plumping, firming, volume-focused effect. Hydrating B5 pairs hyaluronic acid with pantothenic acid (Vitamin B5) for a soothing, barrier-support effect aimed at dehydration rather than volume.
HA Intensifier is built around three bioavailable forms of hyaluronic acid plus a 2% post-biotic ferment extract, and SkinCeuticals positions ProXylane™ – a patented ingredient specific to the brand – as the driver of its plumping, contour-defining effect. It's marketed as a complement to dermal filler results rather than a replacement for one, for skin aged roughly 35–65 with mild-to-moderate ageing concerns. Hydrating B5 takes a simpler route: sodium hyaluronate for surface and deeper hydration, calcium pantothenate to support the skin's own barrier-repair process, and constituents of skin's natural moisturising factor (Sodium PCA, Urea, Trehalose) to help skin hold onto that moisture once it's there. There's no age positioning on Hydrating B5's product description – it's marketed for dehydration at any age.
Ingredients compared
| HA Intensifier Multi-Glycan | Hydrating B5 | |
|---|---|---|
| Core hydrator | 1.3% Pure Hyaluronic Acid, three bioavailable forms | Sodium Hyaluronate – concentration not stated on the pulled product description |
| Signature secondary actives | 12% ProXylane™, 2% Post-Biotic Ferment Extract, plus Liquorice Root Extract (per the product's Shopify ingredient tag – not detailed in the main description copy, see data gap below) | Calcium Pantothenate (Vitamin B5) |
| Supporting moisture-barrier ingredients | Not itemised beyond the actives above on the pulled description | Sodium PCA, Urea, Trehalose – constituents of skin's own natural moisturising factor (NMF) |
| Texture | Lightweight serum-gel | Oil-free, cooling gel |
| Core angle | Volumising and firming – loss of facial volume, fine lines, contour definition | Barrier-support hydration – dehydration, moisture-barrier repair, post-procedure care |
| Size | 30ml | 30ml |
SkinCeuticals publishes formulation percentages for HA Intensifier's headline actives but not for Hydrating B5's – that's a gap in the source copy on the SkinCeuticals product listing, not something filled in with a guess here.
Texture and finish
HA Intensifier is a lightweight serum-gel that SkinCeuticals describes as absorbing rapidly without pilling when layered under other products, leaving skin feeling plumped rather than coated. Hydrating B5 is a crystal-clear, oil-free gel with a cooling feel on application, sinking in within seconds and leaving no residue or film – positioned as a layering step that won't interfere with makeup or clog pores. Both sit at the lighter end of SkinCeuticals' texture range; neither is an occlusive, cream-like product.
Who each one is for
- Choose HA Intensifier if you're mainly concerned with loss of facial volume, fine lines or contour definition. SkinCeuticals positions it for skin aged roughly 35–65 with mild-to-moderate ageing concerns, and as a complement to dermal filler results rather than a replacement for one.
- Choose Hydrating B5 if dehydration is the main issue, regardless of age or skin type – including oily or acne-prone skin that's dehydrated rather than genuinely dry, or skin recovering after microneedling, peels, laser or injectable treatments.
- Both are listed as fragrance-free and suitable for all skin types on their respective Shopify listings, and both sit under a daily moisturiser rather than replacing one.
The two formulas don't overlap in a way that would cause a clash, but layering both isn't something either product description specifically recommends. If you're unsure whether your routine needs one or the other – or both – that's a conversation for our team rather than a guess based on this comparison.
Who should skip, or patch test first
- Skip or check with our team before HA Intensifier if you're outside the 35–65 age range SkinCeuticals markets it for, or if fine lines and volume loss aren't your main concern – Hydrating B5's simpler formula may suit better.
- Skip or check with our team before Hydrating B5 if you're specifically after a firming or contour-defining effect rather than hydration – that's HA Intensifier's job, not this one's.
- Both should be patch tested first if you have reactive or sensitised skin, as with any new skincare product, even though neither is marketed as an actives-heavy formula.
Where they sit in the SkinCeuticals range
HA Intensifier and Hydrating B5 are the two headline hyaluronic-acid serums in SkinCeuticals' Hydration line-up, sitting alongside Hydrating B5 Masque and Emollience for richer, cream-based hydration steps. Read the full write-ups for HA Intensifier Multi-Glycan and Hydrating B5 individually, see where they fit in our best SkinCeuticals anti-ageing serums and creams guide, or start with the SkinCeuticals brand guide if you're new to the range.
Safety and patch testing
If you're pregnant or breastfeeding, please contact our team for advice before use. As with any new skincare product, patch test first if you have sensitive or reactive skin, and stop use if irritation occurs. Both serums are listed as fragrance-free on their Shopify product descriptions; neither description confirms vegan or cruelty-free status for this comparison, so check the full ingredients list on the product page if that matters to your routine.