1x or 2x or 3x or 4x Opalescence PF 20% Regular 1.2ml Gel(s) 1 x Opalescence Instructions. Opalescence PF Teeth Whitening Gels. Opalescence PF is the leading product in teeth whitening. Opalescence PF contains Potassium and Fluoride to reduce tooth sensitivity and fight decay.
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