Narisu Cosmetics Patents Formulation for Facial Cleanser with Highly Elastic, Long-Lasting Foam that Reduces Skin Friction

Research Sample: Foam with Elasticity Sufficient to Stand in an 'S' Shape

Narisu Cosmetics Co., Ltd. (President: Hirokazu Muraoka, Head Office: Fukushima-ku, Osaka City) announces the successful development and patent registration of a facial cleanser formulation that generates highly elastic foam with long-lasting stability. Below is a detailed overview of this achievement.

[Current State of Foaming Facial Cleansers]

Cleansing facial impurities with a facial wash is universally recognized as the essential first step in skincare, regardless of era. While fine, elastic, and long-lasting foam has traditionally been desired for a pleasant cleansing experience, modern facial cleansers are now also expected to minimize friction by creating a protective foam barrier between fingers and skin. However, conventional methods for enhancing foam strength and durability have faced challenges such as stickiness, stringiness, and skin or eye irritation due to high concentrations of surfactants.

[Details of the Patent]

The patented technology combines three innovative approaches to achieve superior foam elasticity and longevity. First is the optimization of fatty acid composition. By carefully adjusting concentration and composition, the formulation effectively removes dirt while preserving the skin’s natural moisture. Second is a novel coacervation technology. Coacervation refers to a formulation technique that leaves the skin feeling smooth after cleansing. In this formulation, a specific cationic polymer is used in optimal balance, successfully delivering unprecedented adhesion, smoothness, and moisturizing sensation.

Finally, the core of this patent is Pickering technology. Pickering stabilization involves using fine particles adsorbed at interfaces to stabilize foams and emulsions. In this research, a composite was formed by combining a specific clay mineral with a cationic polymer. Unlike conventional clay minerals, which do not align uniformly on foam films, this optimized composite aligns densely across the film surface. This reinforcement significantly strengthens the foam membrane, resulting in exceptional elasticity and durability. The resulting foam is so stable that it can maintain an upright 'S' shape—resisting collapse and delivering a safe, comfortable cleansing experience.

Pickering Technology Illustration

[Patent Registration Number] 7869627

[Registration Date] May 26, 2026

[Title] Cosmetic Cleansing Agent