Hello. Thank you for visiting our store, we buy things in a licensed pharmacy in the European Union. Soluble tablets containing enzymes effectively clean dentures down to the smallest cracks. The tablets dissolve; they remove hard plaque and stains from tea, coffee and nicotine. When used twice a day, your dentures will retain their original whiteness. Dosage Dissolve 1 tablet in a glass of warm water. Immediately lower the dentures into the glass with the solution and make sure that the dentures are completely immersed in the solution. Leave them in the solution for 10-15 minutes. If desired, you can leave the dentures in the solution overnight.