Sisu SMILE @ Home Teeth Whitening Refill Kit (Pack Of 3) In our brand new pack of 3 gel refills, you get 36 treatments of SISU Smile! 6 weeks of a brighter, whiter smile for just €25! Unlike other refill kits, the revolutionary Sisu SMILE @ Home Refills formula will cause no pain with sensitive teeth as we use zero hydrogen peroxide! Ingredients: Sodium Chlorite, Sodium Bicarbonate, Deionized Water, Glycerol, Propylene Glycol, Carbomer, XANTHAN GUM, CITRIC ACID, Aloe Leaf Juice, Chamomile Flower Extract, Pomegranate Seed Extract & Menthol.