The Ester C Face Serum works in multiple ways to improve the appearance of skin with discolorations. Thanks to its high content of stable vitamin C, it effectively inhibits melanin synthesis. The active Tripeptide-19 in the serum has anti-wrinkle and regenerating effects, while hyaluronic acid, vitamin E, and witch hazel hydrosol provide hydration, protection against free radicals, and soothe irritation.