Highly absorbing fog droplets of a solution of Victoria Blue R in polyethylene glycol are accelerated into the direction of the source of a He-Ne laser. The reverse movement is observed with the more volatile diethylene glycol as a solvent. These qualitative results are discussed on the basis of known effects of photophoresis and on the hypothetical assumption of forces bound up with the conservation of photonic momentum in solutions of dyes, opening a link to the enhanced optical Kerr-effect in nematics.