Cualidades efímeras is a series of glass sculptures that share the same geometry. The pieces receive light from different and alternate sources, which generate multidirectional projections that progressively change direction. The orthogonal rigidity of the structures, contrasts with those elastic shadows that expand towards different places. They are palimpsests of ephemeral projections that are cyclically rewritten. The work implies a transition from the contained image, bounded in pristine glass objects, to the expanded image, visible in the paths of light that overlap and subtly follow one another.