COSRX Galactomyces 95 Tone Balancing Essence is a brightening serum with Galactomyces Ferment Filtrate to keep tired skin clean and smooth.This essence is composed of fermented ingredients with a structure similar to that of skin, achieving dual effects of whitening and anti-wrinkle. Gives dull skin a radiant, translucent finish.After washing your face, take an appropriate amount and pat until absorbed.