Even though facial masks have been around for decades, they have recently undergone a makeover with innovative ingredients, immediately perceived efficacy and creative functionalities that differentiate them from their predecessors. Traditional facial masks are temporarily applied to the face in a thick layer without massage. This film is known to dry quickly, and the residual film is peeled or rinsed off. Some are massaged until they aggregate into easy-to-eliminate rolls.
The application site and amount applied largely determine the rheological properties of facial masks. They are formulated to resemble viscous gels, pastes or thick emulsions. In general, they are shear-thinning products that are easily and homogeneously distributed on the face with the fingers. Once applied, the mask layer should remain in place and not drip. This is necessary to keep the product out of the eyes and mouth.
The main cosmetic objectives of facial masks are to provide: fast, deep moisturization; skin replenishment and restitution; sebum absorption and elimination; and skin rejuvenation. In addition, an immediate radiant complexion is expected by consumers after removing the mask. In other cases, and more frequently in esthetic practices, facial masks are applied over a face cream to help the penetration of actives by promoting intense skin hydration. In this case, they remain longer on the skin and are gently removed by wet wipes.
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