If you have oily or combination skin, hydration can feel like a skincare paradox. Use something too rich and your skin looks greasy by lunchtime — skip hydration and your skin produces even more oil to compensate.
That’s where the Hyalu B5 range from La Roche-Posay comes in. Designed to deliver deep hydration without heaviness, the Hyalu B5 Water Gel and Hyalu B5 Suractivated Serum promise plumped, smoother skin while remaining suitable for sensitive and oily skin types.
After testing both, here’s a full breakdown of what they do, how they differ, and whether they’re actually worth adding to an oily-skin routine.
What Is the Hyalu B5 Range?
The Hyalu B5 line focuses on repairing hydration rather than just moisturising the surface of the skin.
Both products combine:
Hyaluronic Acid (for hydration)
Vitamin B5 (Panthenol) for skin repair
Dermatologist-tested formulas suitable for sensitive skin
Hyaluronic acid is a humectant that attracts water into the skin, helping improve elasticity, texture and fine lines while supporting the skin barrier.
Hyalu B5 Suractivated Serum
Average UK Price: £44–£45 (30ml) depending on retailer
Key Benefits
Intensely hydrates and replumps skin within 1 hour
Improves glow and smoothness in one week
Helps soften fine lines over time
Restores firmness and elasticity
The updated “Suractivated” formula contains four forms of hyaluronic acid designed to penetrate different skin layers for deeper hydration.
Why It Works for Oily Skin
Oily skin is often actually dehydrated, which triggers excess sebum production. Lightweight hydration helps rebalance this cycle.
This serum:
absorbs quickly
layers easily under SPF or makeup
hydrates without heavy oils
What Makes It Different From Other Hyaluronic Serums?
Unlike basic hyaluronic acid serums, this one focuses on skin repair + hydration, not just moisture.
This one has multi-molecular hyaluronic acid instead of one type, there are barrier-repair ingredients included in one formula. Many other cheaper HA serums hydrate temporarily; this formula targets elasticity and firmness as well.
Hyalu B5 Water Gel
Average UK Price: Around £18–£25 (50ml) depending on retailer
Key Benefits
The Water Gel acts as a lightweight moisturiser designed specifically for combination and oily skin.
24-hour hydration
Mattified finish
Refined skin texture
Reduced appearance of pores
Why Oily Skin Loves It
This is where the range really shines. Unlike traditional creams, the Water Gel has a very cooling water-break texture, a main ingredient is silica, which helps with oil control and it is a very a lightweight gel consistency. It hydrates while helping skin stay matte throughout the day. I like using this on days I need and want my makeup to last pretty much all day. For example for parents information evenings last week, I applied my makeup with this underneath at 7am and it lasted me until 7pm.
What Makes It Different From Other Gel Moisturisers?
Many gel moisturisers hydrate but don’t address oil control.
This one combines:
✅ hydration
✅ soothing repair
✅ mattifying technology
So instead of choosing between glow or oil control, you get both.
You may want to skip or patch test if: you are sensitive to fragrance or you prefer completely alcohol-free formulas.
Final Thoughts: Are They Worth It?
The Hyalu B5 duo works particularly well because it tackles a problem many oily-skin routines ignore: hydration imbalance. Instead of stripping oil, these products help skin feel: hydrated, balanced and less reactive.
Best for: oily, dehydrated, or combination skin needing lightweight hydration with skincare benefits beyond a basic hyaluronic serum.
⭐ Overall rating (for oily skin): 4.5/5
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