To apply eyelash extensions, several products are used, including:

1. Eyelash extensions: These are synthetic or natural fibers that are attached to the natural eyelashes with a semi-permanent adhesive.

2. Adhesive: There are different types of adhesives that can be used for eyelash extensions, including cyanoacrylate and medical-grade adhesives. These adhesives are designed to create a strong bond between the natural lash and the extension.

3. Tweezers: These are used to isolate and pick up individual eyelash extensions and place them on the natural lashes.

4. Eye pads: These are used to protect the under-eye area and keep the lower lashes out of the way during the application process.

5. Primer: This is used to prepare the natural lashes for the adhesive and improve the bond between the natural lashes and the extensions.

6. Remover: This is used to remove the eyelash extensions when they need to be replaced or removed.

7. Micro brushes: These are used to apply the primer and adhesive precisely and accurately.

8. Jade stone or glue ring: These are used to hold and dispense the adhesive during the application process.

It's important to note that proper training and certification are required to safely and effectively apply eyelash extensions.