Improvement of Application-gloss of Lipsticks by Poly (alkyl methacrylate)
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概要
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Glossy application is one of the most important characters of lipsticks. One of the major interfering factors of the gloss is aggregate of wax (e.g. paraffin or polyethylene) used as shape retentioner of sticks ; the aggregate deteriorates the surface smoothness of the applied lipstick film. We have found that poly (alkyl methacrylate) (PAMA) dissolves the aggregates and consequently enhance the application gloss dramatically. Our improved colloid prove AFM measurement using polyethylene microsphere suggests that PAMA adsorbed on the surface of wax crystals generates repulsive force, and then improves the dispersion of the crystals in the applied film.
- Japan Society of Colour Materialの論文