Product Features:

• The most stable gel owns 2 years shelf life under room temperature.
• The most efficient gel with low dose (6% HP) but high shades improved.
• Provide with a silicone mouth opener, easily move from LED light to clean.
• For economic & hygiene considerations, if family member would like to use the same LED light, just need to order one mouth opener. 
• Just push the button, LED light will stop after 15 minutes automatically.