What is done when a nail salon does a fill in?

When a nail salon does a fill-in, they typically remove any lifting or outgrown acrylic or gel at the cuticle area and then apply new product to fill in the gap. The technician shapes and files the nails as needed, ensuring a smooth transition between the new and existing product. Finally, they often apply polish or a topcoat to finish the nails, leaving them looking fresh and polished.