Oral Care / Self Whitening / [Signal Blanc Care]

Purchased about 4 years ago, used a few times.
I think I was able to use it about 20 times.
I don't have many opportunities to use it, so I'm offering it to someone who wants to do easy at-home care.
-Includes 10 unused mouth openers
-Includes whitening spray bottle
*Approximately 3/4 remaining (please refer to the 8th image)

Usage instructions below, reference from the internet:

Attach the mouth opener and apply the dedicated whitening spray to your teeth. Wear the light-blocking guard mask (eye guard) to protect your eyes. Select the desired light from the high-precision 3-color LEDs (blue, red, purple) and turn on the device. The sensor with a light pause function allows for smooth fine-tuning during irradiation. Set the irradiation time using the irradiation time and setting buttons. Once set, it can be easily used with the same settings from the second time onwards. After care is complete and irradiation is finished, remove the mouth opener and rinse your mouth. Check the change in tooth tone using the included shade guide.