GOODAL Green Tangerine Vitamin C Serum [Advanced Ver.] is a facial serum formulated with 5% niacinamide and exosome technology to support a brighter, more even complexion. This Korean skincare product contains green tangerine extract, a natural source of vitamin C, which works alongside niacinamide to help improve the appearance of dull skin over time. The serum is designed for those seeking a gentle approach to brightening without harsh irritation, making it suitable for daily use as part of a skincare routine. Its lightweight texture absorbs quickly into the skin, leaving no heavy residue. The exosome technology in this formula aims to enhance the delivery of active ingredients for better absorption, though individual results may vary. This 1.01 fl oz (30 ml) bottle is a practical size for trying or incorporating into a regular regimen. The formula is free from artificial fragrances and harsh additives, focusing on plant-derived components to minimize potential sensitivity. It can be applied to clean skin before moisturizer, ideally in the morning or evening, depending on preference. The serum targets gradual improvement in skin radiance and overall tone, making it a functional option for those with lackluster or uneven skin tone. Its affordable price point offers accessible brightening benefits without premium cost. As with any skincare product, a patch test is recommended to check for personal compatibility. The formula’s emphasis on mild yet effective ingredients supports its role as a daily brightening step, suitable for various skin types, including normal, combination, and dry skin. Regular application may contribute to a more luminous appearance over sustained use, though results depend on individual skin condition and consistency.