Bringing together marine-derived water reservoirs, The Ordinary Marine Hyaluronics provides a lighter alternative to The Ordinary’s ‘Hyaluronic Acid + B5 Hydration Formula’. This advanced formulation contains a 23% concentration of active ingredients, including marine-derived water reservoirs and skin-friendly marine bacteria to help hydrate and moisturise your skin. This alternative to hyaluronic acid is designed to attract and hold water, making it perfect for every skin type, but especially those with dehydrated and dry complexions. Your skin will be left feeling refreshed and hydrated. Absorbed immediately into your skin, the Marine Hyaluronic formula gives an instant yet long-lasting boost of hydration, ensuring that your skin is kept plump and moisturised throughout the day and night. This lightweight hydration serum can be used both morning and night to help maintain the skin’s moisture barrier. It also contains other protective and health-supporting active ingredients like Hawaiian Red Algae, micro-filtered Blue-Green Algae, Glycoproteins and Amino Acids. This formula is free from alcohol, oil, silicones, nuts, gluten and is also cruelty-free and vegan..