It is effective in reducing the appearance of darken spots, blemishes, freckles, pimples and blackheads. tea tree leaf oil helps reducing the pore clogging problem causing the acne and helps pimples and blackheads to dry with rapidly promoting clear and smooth skin. you will see some visible results within 1-2 days. directions : after facial cleaning, evenly drop 1-2 drops of the serum and apply serum thin layer directly to the affected area 2-3 times daily in the morning and night.