Thank you for viewing. Features: Whitening, Breath Odor Prevention/Control Brand new, unused We have stock, so bulk sales are also possible. Please inquire in the question box. The following is extracted from the manufacturer: [How to use] 1. Apply Bishiko toothpaste and brush your teeth as usual. 2. Attach the mouth opener and thoroughly wipe off the moisture from the surface of your teeth and gums. (If moisture remains, the solution will not adhere well.) 3. Spray the whitening solution 3-5 pumps evenly. (It is more effective if you spray it on your gums.) 4. LED irradiation 5. Brush your teeth without toothpaste and rinse. (To remove dirt after irradiation) 6. Repeat steps 2-5. This product is for self-whitening and is safe for the body, even if it gets inside the body or is accidentally swallowed. Type: Toothpaste, Stain Remover Oral Care Features: Whitening, Breath Odor Prevention/Control Oral Care Features: Whitening, Breath Odor Prevention/Control, Periodontal Disease Prevention