The lastic acid works by daily lift friction to peel away old skin. After 5-7 days, old skin will begin to peel away. About 2 weeks later, feet will be like a baby's skin. Open the pack using a pair of scissors. Take care not to spill as the package contains liquid. Soak the feet in the liquid for 1-1.5 hours. After soaking, rinse the feet completely using warm or cold water, soap, etc. From the 3th or 4th day, your old skin will start to dry. From the 5th to 7th day, the old skin will peel off. After the peeling, put on moisturizer cream and your feet will be very smooth.