Sealed, never used. Benefits: A serum suitable for sensitive skin to help fade blemishes, brighten dull skin complexion and exfoliate with the power of Vitamin C and green tea-derived enzyme. Formulated with enzyme from Jeju green tea, 3-O-Ethyl Ascorbic Acid and Ascorbyl Tetraisopalmitate to brighten the skin, achieving a clear skin look. Observed improvement in skin tone and skin condition after four-week usage. Non-comedogenic test completed and free from nine kinds of harmful ingredients, including animal-derived ingredients, mineral oil, Polyacrylamide, artificial colorants, fragrance, Imidazolidinyl Urea, Triethanolamine, silicone oil and PEG.