A nail magnet is a tool used in nail art to create special effects on nails that have been painted with magnetic nail polish. Magnetic nail polish contains tiny metal particles, and when a magnet (the nail magnet) is held close to the wet polish, these particles respond to the magnetic field, forming patterns, lines, or waves on the nail.
The magnet is usually designed in a way that allows for different shapes or designs, and when held over the nail for a few seconds, it creates a unique, attractive look. Common patterns include stripes, stars, and curves, depending on the type of magnet used.
This technique is often called magnetic nail art and is popular in salons or for DIY nail designs at home.