Using this nail art pen is a breeze. First, don't be alarmed if the pen tip is white when you get it - that's normal. Just shake the pen holder well to mix up the fluid inside. When you use it for the first time, press the pen tip to let out the air. Then, push the pen tip a few times and wait a bit for the color to start flowing. Apply the gel on your nails. If there's any extra gel floating on the nail, simply wipe it off. Draw whatever pattern you like and let it dry on its own. After that, add a top coat and let it cure. And remember to put the cap back on right after using it to keep the pen in good condition. This pen is brand new and high - quality, great for both professionals and those doing their own nails at home. Have fun creating beautiful nail art!