Final answer:
A built-on nail is formed by combining a nail tip and nail adhesive. The nail tip is a pre-shaped piece made of plastic or acrylic, while the nail adhesive is a special glue that creates a strong bond.
Step-by-step explanation:
A built-on nail is formed by combining two products: a nail tip and nail adhesive.
The nail tip is a pre-shaped piece made of plastic or acrylic that is applied to the natural nail to extend its length. It comes in different shapes and sizes to match the desired nail shape.
The nail adhesive is a special glue that is used to attach the nail tip to the natural nail. It creates a strong bond between the two surfaces and ensures that the extension stays in place.