Use after preparing your skin with skincare or a makeup base. Dispense an appropriate amount onto the puff and apply with a light, pat-like motion. Apply more foundation to areas you want coverage. Pressing the cushion too hard may result in overflow. If the foundation on the puff becomes thin, push the puff all the way into the cushion. A replacement puff, the Infinity Makeup Puff C (sold separately), is also available. (How to Set Up): Place the refill in the Infinity Cushion Foundation Case (sold separately). Remove the refill from the pouch and align the circle and square on the case and refill, as shown, and securely insert. Open the refill lid and remove the foundation seal before use. Place the included puff on top of the refill lid. The case's mirror has a clear protective film; remove it before use. (How to remove the refill): Open the case lid and turn the refill over while keeping the lid closed. As shown in the illustration, hold the edge of the case with your fingers and apply firm pressure with both thumbs below the PUSH mark on the bottom of the refill to remove it. The refill may pop out, so please be careful. To prevent evaporation, immediately after use, press the refill lid firmly and then close the case lid tightly. A clear liquid (part of the ingredients) may come out, but this does not affect the quality. If it gets on your clothes, avoid using chlorine bleach. A dirty puff can affect the spread and adhesion of foundation and cause damage to the puff. Always keep it clean. If the puff becomes dirty, gently wash it in lukewarm water with a diluted mild detergent. Rinse thoroughly to remove all detergent, drain, and dry completely in the shade before use. Please be careful not to rub the puff too hard as this may damage it.