La Roche-Posay Hyalu B5 Hyaluronic Acid Serum 30ml | Chemco Pharmacy Ireland

La Roche-Posay Hyalu B5 Hyaluronic Acid Serum 30ml

La Roche-Posay Hyalu B5 is a dual-action hydrating serum formulated with two types of hyaluronic acid — one that works on the surface of the skin and one that penetrates deeper — combined with vitamin B5 (panthenol) to boost skin repair and resilience. It delivers intense, lasting hydration while visibly plumping, smoothing and improving the appearance of fine lines and loss of firmness caused by dehydration.

Developed by La Roche-Posay's dermatological research team and tested on sensitive skin, Hyalu B5 is fragrance-free, non-comedogenic and suitable for all skin types including sensitive and reactive skin. One of the most recommended hydrating serums by dermatologists across Ireland and Europe.

Key Ingredients & What They Do

• Hyaluronic acid (two molecular weights) — low molecular weight HA penetrates the skin's surface layers to hydrate from within; high molecular weight HA forms a moisture-retaining film on the skin's surface for immediate plumping
• Vitamin B5 (panthenol) — accelerates skin repair, strengthens the skin barrier and enhances the skin's natural healing process
• La Roche-Posay thermal spring water — naturally rich in selenium, with soothing and antioxidant properties

Key Features

• Dual hyaluronic acid formula — surface and deep hydration
• With vitamin B5 for skin repair and barrier reinforcement
• Fragrance-free and non-comedogenic
• Suitable for all skin types including sensitive skin
• Dermatologist tested
• 30ml — suitable for a full treatment course
• Use morning and/or evening under moisturiser

How to Use

Apply 3–4 drops to clean skin morning and/or evening. Gently pat or press into the face and neck — do not rub. Follow immediately with your moisturiser to lock in the hydration. Can be layered under SPF in the morning. Use consistently for best results — most clinical studies assess benefit after 4–8 weeks of daily use.

For external use only. Avoid contact with eyes. If irritation occurs, discontinue use. Always read the label before use.

Why Buy from Chemco Pharmacy?

• ✅ Authorised La Roche-Posay stockist — genuine product
• ✅ Pharmacist reviewed — Chemco Pharmacy team
• ✅ Fast nationwide delivery across Ireland
• ✅ Also available: La Roche-Posay Effaclar range, Toleriane range and full La Roche-Posay skincare

Frequently Asked Questions

What does La Roche-Posay Hyalu B5 serum do?

Hyalu B5 provides intense hydration using two different molecular weights of hyaluronic acid — one that acts on the skin's surface for immediate plumping and one that penetrates deeper for sustained hydration. The added vitamin B5 repairs the skin barrier and improves resilience. With regular use, it visibly reduces the appearance of fine lines caused by dehydration, improves skin texture and gives a firmer, more supple appearance.

Can I use Hyalu B5 under my moisturiser?

Yes — and this is the recommended approach. Apply Hyalu B5 first to clean skin, let it absorb briefly, then apply your moisturiser on top. The serum delivers active hydration ingredients to the skin while the moisturiser seals them in and prevents moisture loss. This layering technique maximises the benefit of both products.

Is La Roche-Posay Hyalu B5 suitable for sensitive skin?

Yes. Hyalu B5 is fragrance-free, non-comedogenic and dermatologist tested on sensitive skin. It is one of the most widely recommended hydrating serums for sensitive and reactive skin by dermatologists in Ireland. If your skin is very reactive, patch test on a small area before full application.

Can I use Hyalu B5 with retinol or vitamin C?

Yes. Hyaluronic acid is compatible with most active skincare ingredients including retinol, vitamin C, AHAs and BHAs. Apply Hyalu B5 after any water-based actives and before heavier creams or oils. If using retinol in the evening, apply Hyalu B5 first for extra hydration and barrier support — this helps minimise the dryness and irritation sometimes associated with retinol.