I am satisfied with this serum which I have found to be highly usable It possesses a n o n -sticky texture and a fragrance that is not overpowering The ingredients are of high quality and will contribute to reducing discoloration The s e r u m 's consistency is w e l l -suited for application as it is neither too thin nor too thick I have not yet observed a substantial difference in the spots I have but I am aware that the ingredients require a period of time to take effect I have previously utilized other products from this brand which have proven to be satisfactory COSRX AHA 2 BHA 2 Blemish Treatment Serum This serum leverages the power of Zinc PCA PHA Allentoin and Hyaluronic Acid to provide a targeted blemish treatment Z i n c 's drying properties quickly reduce pimple ensures minimal irritation