ATAGO portable viscometer in the viscosity of cosmetics - Database & Sql Blog Articles

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Viscosity is a measure of a fluid’s resistance to flow and reflects the internal friction between its layers. In cosmetics, both emulsions and liquid formulations are considered fluids. From both practical and theoretical perspectives, viscosity has become one of the key physical properties and technical parameters in cosmetic products. Maintaining the right level of viscosity is crucial for product stability, as some cosmetics require specific viscosity ranges to ensure proper performance. Additionally, viscosity influences the product’s appearance and the user’s sensory experience during application. Therefore, achieving an optimal and stable viscosity is essential in cosmetic formulation.

Cosmetics are typically non-Newtonian fluids, meaning their viscosity changes under different shear rates. This makes measuring viscosity more complex than for Newtonian fluids. Controlling the viscosity of cosmetic products is not only a formulation challenge but also a critical process step. Emulsifiers play a vital role in stabilizing emulsions by reducing interfacial tension, facilitating emulsification, and ensuring even dispersion of ingredients.

The type, concentration, and characteristics of the emulsifier directly impact the viscosity of the final product. The concentration of the emulsifier affects the size and distribution of droplets in the emulsion. As the concentration increases, the average droplet radius decreases, which generally leads to higher viscosity. However, if the concentration becomes too high, the droplet size distribution may widen, resulting in lower viscosity. Therefore, finding the right balance in emulsifier concentration is essential for achieving the desired viscosity and stability in cosmetic emulsions.

Ai Tuo

Portable Viscometer

Designed for measuring the mouthfeel viscosity of various beverage production lines, including skim milk in dairy processing, viscosity control in tomato products, pseudoplastic fluid management in seasonings and jams, gelatin viscosity monitoring, and the hardening process of agar. It can also be used to measure the viscosity of greases, paints, inks, coatings, plastics, slurries, rubber, latex, detergents, resins, condensed milk, butter, pharmaceuticals, and cosmetics. This device is ideal for quality control and process optimization across multiple industries.