1Box Advanced Teeth Whitening Kit Tooth Whitener Gel Bleach White Dental System. Adjust the water agent and nano whitening powder into a paste (Note: slowly add the water to the powder to stir, the consistency is to use the brush to pick up the whitening agent without dripping, not too thick) Apply the whitening agent A total of 16 or more tooth surfaces above and below, a thickness of about 2-3 mm.
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