OSEA Hyaluronic Acid Sea Serum 1 oz — Lightweight Hydrating Face Serum with Dual-Weight HA & Seaweed

This concentrated 1 oz serum blends two molecular weights of hyaluronic acid with Japanese Miru seaweed and snow mushroom to help replenish surface moisture and support skin’s feel and elasticity. Designed for layering under creams or makeup, the non-greasy formula absorbs quickly, leaving a dewy finish without heavy residue. It follows OSEA’s clean-beauty commitment: vegan, cruelty-free, and formulated without PEGs, parabens, phthalates, or synthetic fragrances.

How does this serum add hydration to dry or dehydrated skin?

The serum uses hyaluronic acid molecules of different sizes so moisture-attracting ingredients target both surface and deeper skin layers. Seaweed and snow mushroom help maintain a hydrated feel while supporting the skin’s moisture network. The fast-absorbing texture makes it suitable for morning and evening routines.

• Dual-weight hyaluronic acid draws and holds water at varying skin depths
• Seaweed (Japanese Miru) helps rebalance moisture
• Snow mushroom offers plant-based moisture support and a smooth finish
• Light texture layers easily under moisturizer or sunscreen

Will this serum help reduce the appearance of fine lines and loss of elasticity?

The formula is crafted to improve skin’s suppleness and temporarily plump the look of fine lines by replenishing moisture. While topical hydration can soften the appearance of lines, results vary with skin type and routine consistency. Use regularly as part of an anti-aging regimen for best visible benefits.

• Hydration-driven plumping helps smooth the look of expression lines
• Supports skin’s natural elasticity with moisture-retaining ingredients
• Works well combined with sunscreens and antioxidant serums

How do I use OSEA Hyaluronic Acid Sea Serum in my skincare routine?

Apply a few drops to clean, slightly damp skin, then gently press or pat until absorbed. Follow with moisturizer to lock in hydration, and apply sunscreen during the day. It is formulated to layer easily with other active treatments and makeup.

• Use after cleansing and toning, on damp skin for best absorption
• Apply 2–4 drops and press in; follow with moisturizer
• Safe for morning and night; always finish daytime routine with SPF

Who is this for? OSEA Hyaluronic Acid Sea Serum is aimed at anyone seeking a clean, plant-forward hydrating serum: people with dry, combination, or aging skin who want visibly smoother texture without heavy oils; those who prefer vegan and cruelty-free skincare; and customers who value products made with sustainably minded botanicals. It’s also a good choice for those looking to add a fast-absorbing moisture booster that layers well under other treatments and makeup.

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