Powders treated with silicones represented by the following formula (1): R.sup.1.sub.a R.sup.2.sub.b R.sup.3.sub.c SiO.sub.(4-a-b-c)/2 (1) wherein R.sup.1, R.sup.2, R.sup.3 a, b and c are as defined herein, are suitable for use in cosmetic materials.

Le polveri hanno trattato con i siliconi rappresentati dalla seguente formula (1): R.sup.1.sub.a R.sup.2.sub.b R.sup.3.sub.c SiO.sub.(4-a-b-c)/2 (1) in cui R.sup.1, R.sup.2, R.sup.3 a, la b e la c sono come definiti qui, sono adatti ad uso in materiali cosmetic.

 
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