Tooth whitening technology. Zhenmei angel tooth pigment extraction is a tooth whitening technology, which makes teeth brighter and whiter by extracting pigment from tooth surface. The tooth pigment extracted by Zhenmei Angel does not need to remove the enamel on the tooth surface, and will not cause wear and injury to teeth, acid swelling and pain to teeth and periodontal tissues, and will not cause irritation and injury to gums.