Invisalign Aligner Cleaning Foam is a patented cleaning formulation designed to clean and freshen orthodontic aligners and clear retainers. Keep your aligners or retainer odor-free, hygienic and clear with Invisalign cleaning foam. An easy to use, convenient foam and go aligner or retainer cleaner, no soaking or rinsing necessary. Ingredients: Water, hydrogen peroxide, glycerine, PVP, PEG, sodium lauryl sulfate, sucralose, sodium citrate, sodium benzoate, etidronic acid, mentha arvensis (mint) oil. Directions: Clean aligners: Remove aligners. Dispense 1 full pump of foam inside each aligner, spreading evenly with a finger to clean the aligners. Place aligners back into mouth and spit out excess foam. Wipe off fingers. Foam will dissipate with natural flow of saliva, no need to rinse. Use up to 4 times daily to clean and freshen aligners. Clean Invisalign aligner case: Remove aligners and place them inside their storage case. Cover aligners with foam and let them sit for up to 5 minutes. Rinsing and brushing aligners before replacing them in mouth is optional.