Dust and molecules are found in a large variety of astrophysical environments, in particular in the circumstellar material ejected by evolved stars. This text brings together astronomers and astrophysicists in the field of molecular astrophysics and stellar physics to discuss the important issues of dust and molecular formation, the role of solids in circumstellar environments, molecules as probes of circumstellar parameters, the stellar contribution to the enrichment of the Galaxy, and the latest observational data in various wavelength domains, in particular in the infrared with results from the Infrared Space Observatory. The astrophysical scenarios include late-type stars, novae, Wolf-Rayet stars, Luminous Blue Variables and supernovae. The book should be of interest to researchers and graduate students in the fields of stellar physics, stellar evolution and astrochemistry.