Opalescence Go 15% Tooth Whitening System Mint Flavor 2 boxes Expires 11/30/2027.

These boxes of Opalescence Go 15% Teeth Whitening Trays/kit include prefilled, disposable trays designed to fit comfortably without impressions. The gel features a 15% hydrogen peroxide concentration for professional-level results at home. The formula contains potassium nitrate and fluoride (PF) to help strengthen enamel and reduce sensitivity.

My aunt's dentist convinced her to buy these when she complained about coffee stains. She decided she doesn't want to use them. These have been stored at a comfortable room temperature, in a hallway closet. My aunt has a super clean smoke-free home.