OSEA Hyaluronic Acid Sea Serum 1 oz — Dual-Weight Hydration with Seaweed & Snow Mushroom

OSEA Hyaluronic Acid Sea Serum is a concentrated, fast-absorbing face serum that delivers multi-weight hyaluronic hydration and seaweed-derived nourishment to help skin look smoother and more resilient.

Lightweight yet potent, this serum combines two molecular weights of hyaluronic acid with Japanese Miru seaweed and snow mushroom to replenish surface moisture and support the skin’s natural barrier. Formulated for daily use, it layers well under moisturizers and makeup and is free from animal-derived ingredients, harsh chemicals, and common synthetic additives.

How does this serum hydrate without feeling heavy?

The formula blends low- and high-molecular-weight hyaluronic acid so hydration reaches both the skin’s surface and the upper layers beneath. Snow mushroom and Miru seaweed help lock in moisture while maintaining a breathable finish that doesn’t feel greasy.

• Dual-weight hyaluronic acid for multi-depth hydration
• Seaweed and snow mushroom for moisture retention and a dewy finish
• Fast-absorbing texture suitable for layering under skincare and makeup

Will this product help reduce the appearance of fine lines?

The serum is designed to visibly plump and smooth skin by boosting hydration and supporting elasticity, which can make shallow lines appear softer. Regular use as part of a hydration-focused routine can contribute to a more even-looking texture without harsh actives.

• Concentrated hyaluronic acid to temporarily diminish the look of fine lines
• Ingredients aimed at strengthening the skin’s moisture barrier
• Non-irritating, suitable for most skin types seeking preventive and corrective hydration

What makes this a clean, sustainable choice?

OSEA formulates with nature-derived components and avoids common synthetic contaminants, reflecting decades of focus on eco-conscious personal care. The serum is vegan, cruelty-free, and excludes PEGs, parabens, phthalates, and other listed synthetic additives.

• Nature-forward ingredients like Miru seaweed sourced for efficacy
• Vegan, cruelty-free, gluten-free formulation with no parabens or phthalates
• Manufactured following OSEA’s sustainability and ingredient transparency practices

How should I use this serum in my daily routine?

Apply a few drops to freshly cleansed skin morning and evening, smoothing gently across face and neck. Let it absorb for a minute before following with moisturizer and sunscreen in the morning or a nourishing cream at night.

• Use 2–4 drops on damp or cleansed skin for best absorption
• Layer under creams, oils, or SPF without pilling
• Compatible with most active serums; patch-test if combining with strong actives

Who is this for: OSEA Hyaluronic Acid Sea Serum is intended for anyone seeking a clean, plant-forward hydrating serum—particularly people who want a lightweight product to smooth texture, support moisture balance, and layer easily under other skincare or makeup. It suits dry, combination, and aging skin types, plus anyone prioritizing vegan and cruelty-free beauty choices.

Ingredients

NATURAL DERIVED INGREDIENTS: Aqua, Gigartina Skottsbergii Extract, Macrocystis Pyrifera Extract, Undaria Pinnatifida Extract, Sodium Hyaluronate, Hyaluronic Acid, Potassium Sorbate, Citric Acid, Lonicera Caprifolium Extract, Lonicera Japonica Extract, Chlorophyll