Intensely Hydrating, Skin-Plumping Serum for Fine Lines & Dehydration
La Roche-Posay Hyalu B5 Serum is a dermatologist-developed hydrating formula designed to plump the skin, smooth fine lines, and repair the moisture barrier. It combines two forms of pure hyaluronic acid with Vitamin B5 (Panthenol) and Madecassoside, offering deep hydration and long-lasting skin comfort.
If your skin feels tight, dehydrated, dull, or rough, this is one of the most effective hydration serums in La Roche-Posay’s lineup.
Why This Serum Works?
Dual Hyaluronic Acid (High & Low Molecular Weight)
Hydrates multiple layers of the skin, plumps fine lines, and boosts smoothness.
Vitamin B5 (Panthenol)
Supports skin barrier repair and calms irritation and dryness.
Madecassoside (Centella Asiatica Extract)
Helps soothe stressed or sensitive skin and enhances skin recovery
Comforting Gel-Serum Texture
Lightweight, non-sticky, and absorbs quickly without piling under moisturizer or makeup.
What You’ll Notice?
- Fresh, hydrated, dewy-looking skin
- A smoother, softer texture
- Plumped fine lines caused by dehydration
- Relief from tight or dry skin
- Healthier, more elastic skin with continued use
Most people feel immediate hydration, with visible smoothing in 1 to 2 weeks.
Ideal For
- Dry, dehydrated, or tight skin
- Fine lines from moisture loss
- Dull or rough texture
- Sensitized or compromised skin barrier
- Anyone wanting a gentle daily hydrating serum
How to Use?
- Apply 2 to 3 drops to clean skin in the morning and/or evening.
- Press gently onto the face and neck.
- Follow with a moisturizer.
- Use sunscreen during the day.
Compatible with vitamin C serums, niacinamide, peptides, and most moisturizers
FAQs
Q. Is this good for sensitive skin?
Yes, it is formulated for sensitive skin and includes Vitamin B5 and Madecassoside to help soothe irritation.
Q. Can I use it with actives like vitamin C or retinol?
Yes, you can use it with vitamin C or retinol; however, use it before moisturizer and sunscreen in the morning. If using retinol at night, apply this serum first to buffer the dryness.
Q. How long until results?
Hydration is immediate; however, plumping and smoothness typically improve within 1 to 2 weeks.
Q. Does it help with aging?
By deeply hydrating and plumping, it softens fine lines and improves skin elasticity.












Yamna –
This serum is really good. I have been using it since last year and results are awesome.