La Roche-Posay Hyalu B5 Hyaluronic Acid Serum 1 oz — Deep Hydration, Barrier Repair for Sensitive Skin

Powered by a 4-way hyaluronic acid system plus vitamin B5 and glycerin, Hyalu B5 delivers multi-depth hydration to replenish and support barrier repair. The formula includes La Roche-Posay Thermal Spring Water and is designed for daily use on sensitive skin. Lightweight yet richly moisturizing, it absorbs without leaving a sticky film and can be layered under moisturizers or makeup.

How quickly will I notice hydration and plumping?

Many users report a noticeable difference in skin texture and hydration within hours, with cumulative improvement over daily use. Instrumental tests indicate enhanced barrier recovery and increased bounce after continued application.

• Apply 4–5 drops twice daily to clean skin for best results.
• Visibly smoother texture can appear after the first hour and improves over weeks.
• Works under sunscreen and makeup without pilling.

What ingredients make this serum effective for dry or aging skin?

The serum combines high- and low-molecular-weight hyaluronic acids to hydrate surface layers and deeper skin strata, while vitamin B5 supports barrier repair and glycerin attracts moisture. La Roche-Posay Thermal Spring Water soothes and contributes minerals beneficial for sensitive skin.

• 4 Hyaluronic Acid System targets multiple skin layers for layered hydration.
• Vitamin B5 (panthenol) helps restore the moisture barrier and comfort.
• Glycerin adds humectant hydration for a soft, plump feel.

Is Hyalu B5 suitable for sensitive or reactive skin?

This formula is allergy- and dermatologist-tested, developed under a strict formulation charter to minimize irritation. Its soothing base and clinically tested tolerability make it appropriate for a wide range of skin types, including sensitive skin when used as directed.

• Free from heavy fragrances that commonly provoke sensitivity.
• Dermatologist-verified for use on sensitive skin types.
• Can be layered with other La Roche-Posay treatments or moisturizers.

How should I incorporate this serum into my routine?

Use Hyalu B5 after cleansing and toning, before your moisturizer and sunscreen. A few drops spread over face and neck twice daily are enough; gently press into skin to boost absorption and avoid rubbing.

• Morning and evening application for consistent barrier support.
• Follow with moisturizer to lock in hydration and a sunscreen during the day.
• Compatible with most active treatments—patch test if combining with strong actives.

Who is this for: Hyalu B5 is intended for anyone seeking intensive hydration and a visibly plumper complexion—especially those noticing dehydration lines, texture changes, or a weakened moisture barrier. It’s a good fit for sensitive skin, daily preventive care, or as a supportive step in anti-aging routines for both women and men.

Ingredients

Aqua / Water. Glycerin. Alcohol Denat. . Propylene Glycol . Panthenol . Pentylene Glycol . Dimethicone . Peg-6 Caprylic/Capric Glycerides . Ppg-6-Decyltetradeceth-30 . Glyceryl Isostearate . Madecassoside . Sodium Hyaluronate . Ammonium Polyacryloyldimethyl Taurate . Disodium Edta . Hydrolyzed Hyaluronic Acid . Caprylyl Glycol . Citric Acid . X An Th An Gum . Butyl Ene G Ly Col . Tocopherol . Phenoxyethanol . Parfum / Fragrance. Product packaging may vary.