Dr.Althea Aqua Marine Deep Serum is a lightweight facial serum formulated to deliver instant hydration and soothing benefits across all skin types. This Korean vegan skincare product centers on a water-based, marine-derived complex that includes deep sea water and algae extracts, known for their ability to support the skin’s moisture barrier while providing a calming effect. The serum also incorporates hyaluronic acid, a widely used hydrating ingredient that helps retain moisture in the skin without leaving a greasy residue, and panthenol to further assist in soothing irritation and supporting skin recovery.

The formula is designed to be gentle enough for sensitive skin, as it avoids common irritants such as artificial fragrances, dyes, and parabens. Its non-comedogenic nature means it does not clog pores, making it suitable for combination, oily, and acne-prone skin types as well as dry or dehydrated skin. The texture is a silky, quick-absorbing essence-gel that layers well under moisturizers or sunscreen without causing heaviness.

Typical application involves a few drops pressed gently into cleansed skin, morning or evening, followed by a moisturizer. Users may notice temporary tingling if the skin is extremely dry, but the overall finish is cooling and soothing. Key advantages include a straightforward ingredient list focused on hydration and skin barrier support, a vegan and cruelty‑free formulation, and a relatively accessible price point compared to other concentrated serums in the same category.

This product suits individuals seeking a daily hydrating step that complements existing routines, especially those who value clean, plant‑derived skincare. As with any topical product, a patch test is recommended prior to first use to confirm individual compatibility.