Summary "Compositions and Cosmetic Treatment Process" The present invention relates to compositions, in particular cosmetic, in emulsion form comprising (1) at least one polyester resulting from the esterification by a polycarboxylic acid of a hydroxy acid ester aliphatic carboxylic acid comprising at least two hydroxyl groups and at least one nonionic cellulose derivative comprising one or more hydrophobic substituents having from 8 to 30 carbon atoms; (2) at least one active selected from c-glycoside derivatives, in particular c-beta-d-xylopyranoside-2-hydroxypropane, and cucurbic acid derivatives such as 3-hydroxy acid sodium salt 2-pentylcyclopentyl) acetic, at least one pasty fatty body, and at least one nonionic cellulose derivative comprising one or more hydrophobic substituents having from 8 to 30 carbon atoms. The present invention provides emulsions which contain: (1) pasty fatty bodies that are stable or (2) active among c-glycoside derivatives and stable cucuric acid derivatives, even without the use of emulsifying surfactant or a low emulsifying surfactant (e.g. less than 3%), and which give good sensory pleasure, even if the compositions have a high pasty / active fat body ratio. The composition according to the present invention confers excellent sensoriality, without harsh or sticky rough effect and without peeling effects. In addition, it enables the perception of effectiveness to be enhanced by the immediate effects felt from the application of the product: nourishing, soothing, moisturizing effects.resumo “composições e processo de tratamento cosmético” a presente invenção tem por objeto composições, em particular cosmética, em forma de emulsão que compreendem (1) pelo menos um poliéster que resulta da esterificação, por um ácido policarboxílico, de um éster de ácido hidroxi carboxílico alifático que compreende pelo menos dois grupos hidroxila e pelo menos um derivado não iônico de celulose que compreende um ou mais substituintes hidrofóbicos que