NT T04 - Brand new 15mL Ridge Filler nail resurfacing treatment by OPI. Helps create a smooth, valley free base for a flawless silky finish. This is the original, black label formula, that has been discontinued as of 2024, and replaced with a gel. This essential OPI product is very hard to find! - Brand New / Unopened - 15 mL / .5 oz - Single bottle - Discontinued / Original Black Label formula / Hard to find - Contains natural silk - New old stock - NT T04 Check out my profile for the 6pc listing of this color and more!