MaskFilm™ is a film-forming support polymer for molded sheet-mask systems used together with carrageenan to build coherent, flexible mask sheets.

In carrageenan-based aqueous systems, the ingredient functions primarily as a structural and sensorial aid rather than as a direct skin active. Its main value is improved sheet integrity, flexibility, handling, and skin-conforming contact during application.

A practical starting point is around 2.5% in a hot-process mask base together with carrageenan, potassium chloride, glycerin, and water. Final performance should be optimized together with the hydrocolloid level, electrolyte level, humectant balance, and casting temperature.

Product Description: MaskFilm is designed for castable water-based mask systems where the target is a smooth, flexible sheet that can be demolded, packaged, and unfolded without tearing easily. In this use pattern, carrageenan provides the primary gel network while MaskFilm helps strengthen film cohesion, improve flexibility, and support more even contact with the skin. The ingredient is therefore best evaluated as part of the complete hydrocolloid-electrolyte-humectant system rather than as a stand-alone gelling material.

Because this is a high-water mask system, the critical development risks are usually physical stability and process control rather than direct skin efficacy. Formulators should screen viscosity during hold, air entrapment, syneresis, sheet thickness uniformity, preservative compatibility, and storage stability after casting. Any performance claim related to active delivery or superior clinical benefit should be established from the finished mask formula, not from the structural role of MaskFilm alone.

Example formulation: The reference system below gives a practical starting point for carrageenan-based sheet mask development with MaskFilm.

Example process:

- Mix Phase A, heat to 95-100°C, and stir at constant temperature until the mixture is uniform and completely dispersed.

- Cool to about 75°C, add Phase B, and stir evenly. While still hot, pour into the mold to form sheet pieces.

Example visual of a hydrogel-style mask sheet format prepared for sheet-mask applications.

Usage: Suitable for molded sheet masks, gel-film masks, contour mask patches, and other castable aqueous cosmetic films where flexibility and sheet integrity are required.

Mixing method:

- Use in water-based hot-process mask systems together with a primary hydrocolloid such as carrageenan.

- Add after the hydrocolloid phase is fully dispersed and hydrated, while the batch is still warm and flowable.

- Optimize together with carrageenan, potassium chloride, glycerin, preservative, and total water to achieve the target balance of castability, flexibility, and wet strength.

Usage rate: 1-4% (common starting point 2-3%, typical trial level 2.5%)

Product characteristics: Milky white liquid

Solubility: Designed for water-based film systems; distribute into the aqueous gel base under moderate mixing.

Storage: Store tightly closed at room temperature. Avoid freezing and prolonged exposure to excessive heat.