VENUS WHITE PRO EVA Sheets 25 Sheets 0.040 thick Whiten your patients' smiles up to 8.4 shades with virtually no sensitivity*. Contains potassium nitrate which helps decrease sensitivity associated with bleaching. Mint flavored for patient comfort. May be prescribed as follow-up treatment to Venus White Max in-office whitening. To keep teeth their whitest, Refill Kits should be used for touch-up every 612 months."