ISDIN Isdinceutics Flavo-C Ultraglican Vitamin C and Hyaluronic Acid Brightening and Antioxidant Day Serum is presented in a set of 10 individual ampoules, each containing 0.06 fluid ounces (1.8 ml) of concentrated serum. This daytime formula combines two key active ingredients: a stabilized form of vitamin C (ascorbic acid) and hyaluronic acid. The vitamin C component is intended to provide antioxidant protection against environmental stressors, support an even skin tone, and contribute to brightness. Hyaluronic acid is included to help maintain skin hydration and improve the appearance of fine lines by delivering moisture to the skin surface.

The product is designed for topical application during the morning routine. It aims to complement the skin’s natural defense mechanisms while offering a lightweight texture that absorbs without heavy residue. The packaging in single-dose glass ampoules is intended to preserve the potency of the active ingredients and reduce oxidation between uses. Each ampoule is sufficient for a single application, making it convenient for travel or controlled usage.

This serum is suitable for a range of skin types, including normal, combination, and dry skin, as well as those looking to incorporate antioxidant support into their regimen. It is not recommended for very sensitive or reactive skin without prior patch testing. The formulation is free from parabens and synthetic fragrances, focusing on a minimalist approach to skincare. The product is manufactured by ISDIN, a Spanish dermatological brand known for its research-driven approach. Consistent use may help maintain a more radiant and hydrated complexion, but individual results vary and depend on overall skincare habits and sun protection.