LCN nails are incredibly natural looking artificial nails created with an innovative light-cured gel system. LCN nails is an abbreviation of light concept gel nails. LCN Gel Nails are made of a gel-like, light cured resin, and are safer, more natural in appearance, and they are a lot more durable then your typical acrylic nail. LCN nails is an abbreviation of light concept gel nails. LCN Light Cured Artificial Gel Nail Try Me Kit Step By Step Application Instructions for - LCN. LCN nails are made of a agel-like cured resin.