Say goodbye to glued-on nail extensions. Looky Rubber Base is specially formulated to smooth the nail surface and extend the life of your at-home manicure. Provides a durable finish that can last up to 14 days. How to Use Apply a thin layer of Rubber Base onto the nail. Cure under a UV/LED lamp for 60 seconds. Repeat application until desired smoothness is achieved. Shape the nail as needed. Apply a top coat and cure under the lamp for 60 seconds.