Nail Polish Thinner, Restore & Preservation is an essential element for achieving that coveted silky-smooth buttery consistency of highly pigmented and opacity nail polishes. Just add a few drops at a time for desired results. Controls the flow and ease of application of all polishes including holos, creams, top and base coats, jellies and crellies, etc. by reducing viscosity as well as prolonging the polishes' shelf-life. Restore and preserve aged polish bottles and batches from drying out by replacing the solvents that have evaporated over time, returning them back to their original consistency. A must have for any nail polish crafter, collector or fanatic!