Acrylic nails are a very strong artificial nail system made by mixing:

• Liquid monomer
• Powder polymer
  
  

When these two are mixed with a brush, they create a soft bead that hardens in the air. It then becomes a solid plastic layer over the natural nail or over a nail extension.

Simple explanation

Acrylic is used to build length and strength on nails and it is one of the strongest nail systems used in salons.