Powdery compositions comprising core-shell particles are provided. The shell contains particles of at least one hydrophobized metal oxide powder and the liquid core contains, based on the weight of the core, about 20.0% by weight to 100.0% by weight, in particular about 50.0% by weight to 100.00% by weight, of at least one polyol of formula (I), wherein n represents an integer from 1 to 4. The powdery compositions are suitable for temporarily shaping keratin-containing fibers. For example, the use of said compositions on human hair resulted in an elastic hairstyle having volume. Hair so treated was given natural gloss.