EAA (Ethyl Ascorbic Acid) is a stable Vitamin C derivative with excellent skin brightening activity. Its chemical structure is unique in that the ethyl group forms an ether with the 3-hydroxy group of the ascorbic acid, which results in much higher stability. Other commercialized ascorbic acid derivatives are ethers at the 2-hydroxy position. It is excellent for use in whitening or anti-aging cosmetics such as gel, essence, lotion and creams.

EAA（乙基抗坏血酸）是一种稳定的维生素C衍生物，具有出色的皮肤增白活性。其化学结构是独特的，因为乙基与抗坏血酸的3-羟基形成醚，这导致更高的稳定性。其他商业化的抗坏血酸衍生物是在2-羟基位置上的醚。适用于美白或抗衰老化妆品，如凝胶，香精，乳液和面霜。