Abstract: A powdery composition, comprising: a) core-shell particles having a shell of hydrophobic or hydrophobized particles; and b) a carrier powder comprising a carrier and at least one of an at least partially water soluble liquid and a water reactive substrate reversibly bound to the carrier by at least one of the capillary action, absorption and adsorption is provided. The core-shell particles have a core, comprising: water; and 0 to 10 wt. % of a total core weight of a dissolved or emulsified material. The carrier comprises at least one material selected from the group consisting of silica, a silica-metal mixed oxide, phyllosilicate, starch, hollow glass spheres, nylon, sugar, cyclodextrines and polysaccharides, and a weight ratio of the carrier powder to the core-shell particles is from 1/1 to 1/9.

Abstract: Powdery composition comprising: a) at least one powder in form of core-shell particles, the core comprising liquid water or a liquid aqueous phase and the shell comprising hydrophobic or hydrophobized particles and b) at least one powder comprising carrier and b1) at least partially water soluble liquid and/or b2) a water reactive substrate each located in and/or on the carrier.