1. Dismantle the compact: remove the bottle cap, gently press the inner edge of the compact with a flat screwdriver, and rotate the compact at the same time until the compact is taken out of the bottle.

2. Replace the sealing ring: take out the original sealing ring, clean the interface between the bottle mouth and the sealing ring, then put the new sealing ring into the bottle mouth and press it gently with your fingers.

3. Install the press block: put the press block into the bottle body, screw the bottle cap with the original method until the press block on the bottle cap is aligned with the press block in the bottle body, and then use it.