AT home tooth whitening light system. Clinically proven to whiten up to 6 shades. Similar to professional whitening light technology. Zero tooth sensitivity. Developed by dentists. Activating whitening light & 4 AAA batteries. Accelerator mouth rinse: (8 fl oz/235 ml). Super whitener: (0.34 fl oz/10ml). Clinically proven to whiten up to 6 shades in 1 hour. FDA cleared. Safe on tooth enamel. Contents: Activating whitening light & stand, accelerator mouth rinse: (8 fl oz/235 ml), super whitener (0.34 fl oz/10ml), four AAA batteries, shade guide to measure results, instructional guide.