It sets the manicure for a long time, giving nails a unique, glass-like effect. The black bottle protects the top coat from light; remember to close the bottle tightly after use to preserve the product's quality for a long time. The product protects against chipping and abrasion, adds depth to the colors, prevents streaking, and creates an incredibly smooth surface. It protects against discoloration and yellowing, and can be used as a top coat for classic nail polishes or as a standalone top coat without color. It lasts up to 10 days.