Nail art is a creative activity that draws pictures or designs fingernails. It a type of art. These days fingernails and toenails are seen by some as important points of beauty.
Also, it is a type of fashion activity, related to manicuring. There are commercial shops (‘nail bars’) where nails are worked on to make them attractive. The main product is acrylic nails with ready-made designs which can be stuck on top of natural nails.
Nail polish, or nail varnish, is a lacquer applied to human fingernails or toenails to decorate and/or protect the nail. Today’s nail polishes are usually nitrocellulose in a solvent such as butyl acetate or ethyl acetate. They may be clear or coloured with pigments. The coating has a plasticizers (e.g. camphor). This links polymer chains, spacing them to make the film flexible after drying. That way it resists cracking or flaking caused by the natural movement of the nail.