Methods of preparing a dentifrice comprising polymer matrix film with menthol therein are disclosed. The methods comprise combining a polymer matrix film that comprises hydrophobic additives and is free of a low solubility flavorant such as menthol with a dentifrice base comprising a low solubility flavorant such as menthol and maintaining the combined polymer matrix film with the dentifrice base comprising low solubility flavorant for an amount of time sufficient for an amount of a low solubility flavorant to transfer from the dentifrice base comprising low solubility flavorant to the polymer matrix film and establish an equilibrium of menthol concentration between the polymer matrix film and the dentifrice base. Products comprising low solubility flavorant-free polymer matrix film in a dentifrice base comprising low solubility flavorant are also disclosed.本發明是揭示其中含有薄荷醇的聚合物基質膜的潔牙物品之製備方法。此方法包括將含有疏水性添加劑且無低溶解度風味劑(例如薄荷醇)的聚合物基質膜，與含有低溶解度風味劑(例如薄荷醇)的潔牙物品基底(dentifrice base)結合，並使結合的聚合物基質膜與含有低溶解度風味劑的潔牙物品基底保持足夠的時間，使一定量的低溶解度風味劑從含有低溶解度風味劑的潔牙物品基底轉移至聚合物基質膜，並在聚合物基質膜與潔牙物品基底之間建立薄荷醇濃度之平衡。本發明也揭示在含有低溶解度風味劑的潔牙物品基底中含有無低溶解度風味劑的聚合物基質膜之產品。
