Acqua dellu2019Elbau2019s Fragrance Diffuser Refill helps to keep the Acqua dellu2019Elba fragrance diffusers filled all year long. Costa del Sole is an ocean scent that combines myrtle, rosemary, lentiscus, marine cistus, Elban limonium, and prickly pears for the bright fragrance of a hidden summer beach escape.