Clear plastic _____ are used to allow UV and LED radiation to penetrate from the underside for more complete curing of the free edge.

• A. Nail tips
• B. Nail plates
• C. Nail forms
• D. Nail shields

Answer: (C)

Clear plastic nail forms are used to sculpt nail extensions in a way that light can reach the underside of the product. Because these forms are transparent, UV and LED radiation pass through from below, helping the gel or acrylic cure more completely at the free edge. This results in a stronger, fully cured extension. Nail tips are pre-made extensions applied to the tip of the nail and don’t provide an underside curing path. The nail plate refers to the natural nail surface, and nail shields are protective coverings used in other contexts, not for enabling underside curing.