Process for preparing an anhydrous composition in powder form or in paste form, in which the following steps are performed: - from 30% to 65% by weight, relative to the weight of the composition, of organic, mineral or composite solid particles, and also mixtures thereof, are prepared, - 10% to 40% by weight, relative to the weight of the composition, of a mixture comprising at least one organopolysiloxane elastomer conveyed in at least a first silicone or hydrocarbon-based non-volatile oil is prepared, - 10% to 45% by weight, relative to the weight of the composition, of an organic binder phase comprising at least a second hydrocarbon-based or silicone non-volatile oil, identical to or different from the first oil, is prepared, at least one pasty compound having a content of between 5% and 25% by weight, relative to the weight of the composition, optionally at least one wax and optionally at least one volatile oil; the wax content not exceeding 5% by weight, relative to the weight of the composition, - the binder phase and said conveyed organopolysiloxane elastomer are introduced into the solid particles with stirring; the conveyed organopolysiloxane elastomer being introduced with the binder phase or separately therefrom, it being understood that the term "wax" means a lipophilic compound, which is solid at 25°C, with a reversible solid/liquid change of state, which has a melting point of greater than or equal to 30°C that may be up to 120°C, it being understood that the term "pasty compound" means a compound that undergoes a reversible solid/liquid change of state, having anisotropic crystal organization in the solid state, and comprising, at a temperature of 23°C, a liquid fraction and a solid fraction, and it being understood that the term "non-volatile" means a compound whose flash point is greater than or equal to 49°C. - from 30% to 65% by weight, relative to the weight of the composition, of organic, mineral or composite solid particles, and also mixtures thereof, are prepared, - 10% to 40% by weight, relative to the weight of the composition, of a mixture comprising at least one organopolysiloxane elastomer conveyed in at least a first silicone or hydrocarbon-based non-volatile oil is prepared, - 10% to 45% by weight, relative to the weight of the composition, of an organic binder phase comprising at least a second hydrocarbon-based or silicone non-volatile oil, identical to or different from the first oil, is prepared, at least one pasty compound having a content of between 5% and 25% by weight, relative to the weight of the composition, optionally at least one wax and optionally at least one volatile oil; the wax content not exceeding 5% by weight, relative to the weight of the composition, - the binder phase and said conveyed organopolysiloxane elastomer are introduced into the solid particles with stirring; the conveyed organopolysiloxane elastomer being introduced with the binder phase or separately therefrom, it being understood that the term "wax" means a lipophilic compound, which is solid at 25°C, with a reversible solid/liquid change of state, which has a melting point of greater than or equal to 30°C that may be up to 120°C, it being understood that the term "pasty compound" means a compound that undergoes a reversible solid/liquid change of state, having anisotropic crystal organization in the solid state, and comprising, at a temperature of 23°C, a liquid fraction and a solid fraction, and it being understood that the term "non-volatile" means a compound whose flash point is greater than or equal to 49°C.