Using this eyelash curler is easy. First, open the curler and place your lashes between the pads. Then, gently squeeze the curler for a few seconds to get your desired curl. Remember not to squeeze too hard to avoid hurting your lashes. As for the notes, be aware that the color you see on your screen might not be exactly the same as the real item because of monitor and light differences. And the size measurements are approximate, so there could be a small deviation. For maintenance, after each use, wipe the curler with a clean cloth to keep it clean. When the silicone pad starts to wear out, you can use the replacement pad included in the package. This way, your eyelash curler will last a long time and keep giving you beautiful curled lashes.