This document relates to materials and methods involved in providing a substrate (e.g., tooth, tooth component, inorganic dental material, skin, hair, nails, hair, lips, and eyelashes) with a desired benefit (e.g., appearance, flavor, breath freshening, and/or medicament). For example, materials and methods for contacting a tooth, tooth component, or inorganic dental material with a polyelectrolyte adhesive containing a conjugate of a polyamine (e.g., a naturally-derived polyamine and/or a synthetic polyamine), a polyphosphate, and one or more whitening agents to provide the substrate with a change in appearance (e.g., a whiter appearance, a more natural appearance, and/or a glossy appearance) are provided.本文係關於向基底(例如，牙齒、牙齒部分、無機牙科材料、皮膚、毛髮、指甲、毛髮、嘴唇及睫毛)提供理想成效(例如，外觀、味道、口氣清新及/或藥品)中所涉及之材料及方法。舉例而言，本文提供用於使牙齒、牙齒部分或無機牙科材料與聚電解質黏著劑接觸以向該基底提供外觀變化(例如，更潔白之外觀、更自然之外觀及/或有光澤之外觀)的材料及方法，該黏著劑含有多胺(例如，天然來源之多胺及/或合成多胺)、聚磷酸鹽及一或多種增白劑之結合物。
