The Mentadent White System formula contains a natural whitening mineral, to effectively remove surface stains without attacking the enamel. The whitening process is progressive. Check the whiteness of your smile in front of the mirror before and after using the product. Resulting in a whiter, more natural smile in 2 weeks. Product not subject to expiration. The product must be consumed within 12 months of opening. For children up to 6 years: use a small amount of toothpaste under adult supervision to minimize swallowing. In case of intake of fluoride from other sources, consult the dentist.