Contains 15% of Ethyl Ascorbic Acid a stable and well-absorbed version of Vitamin C. This is combined with 5% Sodium Ascorbyl Phosphate is another stable form of Vitamin C that is complementary to Ethyl Ascorbic Acid for a further optimized effect. Vitamin C is an anti-oxidant preventing and repairs cell damage by influenced from outside. It contains a high percentage of Matrixyl Synthe6 well known for its anti-wrinkle effect. This serum has a luxurious feel and is absorbed quickly and well into the skin. The serum can be used for day and night under the cream, it doesn’t affect the application of color cosmetics used afterward.