cosmetc pen, tooth whitening light,cosmetic unit 1) cosmetic pen, tooth whitening light,cosmetic unit,tooth whitening pens2)Teethwhitening pen is a supper quick and comfortable teeth whiteningproduct,Coat the teeth whitening with the gel, in 30 seconds the geldriesrapidly and invisibly on the enamel , Then the concentration oftheactive ingredient reaches its maximum. It becomes 5 times ...