Research on the Performance Evaluation Methods of Base Makeup Products.

The article focuses on the development and application of objective, materials science–based methods for evaluating the performance of liquid foundation products. It assesses three commercial long-lasting liquid foundations for properties including waterproofing, sweat and sebum resistance, skin texture smoothing, moisture permeability, optical effects (haze, gloss, and color), and microstructural film behavior on skin using instruments such as contact angle meters, three-dimensional interference microscopes, and scanning electron microscopes. Results indicate that the foundations exhibit varying degrees of water and sebum resistance, improve skin surface smoothness by reducing roughness, allow moisture permeability, and provide optical effects that enhance skin appearance, though film integrity may degrade over time due to sebum secretion and facial movements. The study highlights the importance of establishing standardized, quantitative evaluation techniques to support product development and meet consumer demands in the cosmetics industry.