Application of PVP in Oral Care Products (Toothpaste, Mouthwash): Dispersed Protective Film and Oral Cleaning Aid

Toothpaste and mouthwash not only need to clean tooth stains, but also need to maintain system stability, improve taste, and inhibit pigment re deposition. Polyvinylpyrrolidone PVP is widely used in daily chemical toothpaste and mouthwash formulations due to its complex dispersion, film-forming protection, and stabilizing properties.

1、 Core mechanism of action

1. Mechanism of pigment stain dispersion: PVP molecules can chelate colored substances such as tea stains and coffee stains in the oral cavity, disperse dental plaque pigments, reduce pigment adhesion to the tooth surface, and play an auxiliary role in stain removal.

2. Film formation protection mechanism: A thin and light protective film is formed on the teeth and oral mucosa, prolonging the residence time of active ingredients, assisting in reducing odors, and protecting the oral mucosa.

System stabilization mechanism: as a colloid protector, it can stabilize the toothpaste paste, prevent the powder from settling, improve the paste extrusion feel, and stabilize the essence system.

2、 Typical Applications and Process Control

1. Whitening and stain removal toothpaste: Add 0.3 1.0% PVP K30 to assist in dispersing pigments, reducing tooth stain deposition, and stabilizing the paste. Process key points: PVP is first dissolved in the aqueous phase, and then kneaded with sorbitol and friction powder to ensure the uniformity and stability of the paste.

2. Fresh mouthwash: add 0.2 0.8% PVP K30 to stabilize essence, prolong the retention time of effective ingredients in the mouth, and improve the taste. Process points: PVP, humectant, essence and preservative shall be stirred and dissolved in the aqueous phase at room temperature to avoid high temperature.

3、 Advantages and safety features

PVP has high physiological inertia, safe oral contact, and no irritation; It has good compatibility with fluoride, essence and sweetener, and will not interfere with the whitening and mothproof active ingredients. It is a multifunctional auxiliary for oral care formula.