What is the Nail Glue made of? The main ingredient is Ethyl 2-cyanoacrylate, a fast-drying glue commonly used for Press-ons. Related articles Can the Nail Glue cause allergies? How do I safely remove Press-ons with the Nail Glue? Can I reuse Press-ons? Can I use the Nail Glue during my pregnancy? Can you store Gel Nail Stickers back in the packaging after use for later?