• O Cosmedics 4D Hyaluronic Serum hydrating face serum with four forms of Hyaluronic Acid for dehydrated, dry and sensitive skin.
  • O Cosmedics 4D Hyaluronic Serum 4D Hyaluronic Acid technology for multi-layer hydration and plumper, smoother-looking skin.
  • O Cosmedics 4D Hyaluronic Serum for dehydration, fine lines and skin barrier support with long-lasting multi-layer moisture.
  • O Cosmedics 4D Hyaluronic Serum lightweight water-gel Hyaluronic Acid serum for deep hydration, softness and skin bounce.
  • O Cosmedics 4D Hyaluronic Serum corrective hydrating serum for dehydrated skin alongside the O Cosmedics serum collection.
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O Cosmedics

O Cosmedics 4D Hyaluronic Serum

O Cosmedics 4D Hyaluronic Serum

$99.00 AUD
$99.00 AUD
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O Cosmedics 4D Hyaluronic Serum is an advanced hydrating face serum powered by four forms of Hyaluronic Acid to deliver multi-layer moisture, relieve dehydration and leave skin visibly plumper, smoother and more supple. Designed to support the skin barrier while improving the appearance of dehydration lines, it provides both immediate and long-lasting hydration without a heavy finish.

Ideal for dehydrated, dry, sensitive or compromised skin, this lightweight water-gel serum uses four molecular forms of Sodium Hyaluronate to create a multi-dimensional hydration network across different levels of the skin. The advanced 4D Hyaluronic Acid system helps attract and retain moisture, reduce transepidermal water loss and reinforce barrier function while improving visible elasticity, bounce and the appearance of fine lines caused by dehydration. Fast-absorbing and easy to layer, it leaves skin feeling deeply hydrated, soft and comfortable, making it an effective daily hydration serum for all skin types and an ideal introduction to active skincare.

Good to Know: Emulsifier-free and biomimetic to align with the skin's natural physiology, this vegan-friendly and cruelty-free serum is also formulated without parabens, sulfates, petrochemicals or mineral oils.

Product Size: 30ml

What We Love

✓ Four forms of Hyaluronic Acid work at different levels of the skin
✓ Targets dehydration from multiple angles
✓ Plumps and smooths dehydration lines
✓ Strengthens hydration where compromised skin needs it most
✓ The lightweight water-gel texture layers effortlessly into almost any routine

Pair It With

O Cosmedics Gentle Antioxidant Cleanser

O Cosmedics Comfort Cream

O Cosmedics 3 In 1 Fruit Peel Mask

Key Ingredients

  • Sodium Hyaluronate Crosspolymer - Forms a breathable moisture-locking film to help reduce water loss and provide prolonged hydration.
  • Sodium Hyaluronate - Attracts and holds water at the skin's surface, helping maintain hydration, softness and suppleness.
  • Sodium Acetylated Hyaluronate - Adheres to the skin's outer layer to support lasting moisture and a smoother, softer feel.
  • Hydrolyzed Sodium Hyaluronate - An ultra-low molecular weight form that penetrates more deeply to support hydration, visible elasticity and skin bounce.

How To Use

Apply O Cosmedics 4D Hyaluronic Serum morning and/or evening to freshly cleansed skin.

Dispense 1 pump onto fingertips and smooth over the face and neck, including around the eye area. Follow with your O Cosmedics hydrator and, in the morning, Mineral Pro SPF 30 or Mineral Pro SPF 50.

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★★★★★

“My skin gets dehydrated really easily and this has made such a difference. It sinks in quickly and my skin feels much softer and more comfortable without feeling sticky.”

Sophie, Brisbane QLD

★★★★★

“I’ve tried a few hyaluronic serums but really like the texture of this one. One pump does my face and neck and it sits perfectly under moisturiser and makeup. My skin definitely looks a little plumper too.”

Natalie, Bendigo VIC

★★★★★

“added this when my skin started feeling dry and tight and noticed the difference within the first week. I use it morning and night now and especially love it after cleansing when my skin needs that extra hydration.”

Claire, Wollongong NSW