Rahua's leave-in Finishing Treatment is infused with the brand's signature symbiotic® rahua oil that satisfies thirsty strands. The heat from a blow dryer or styling tool activates the rahua oil, making it even more potent as it calms frizz, tames stray hairs, elevates shine, and restores hair to weightless softness. Symbiotic® rahua oil: satisfies thirsty strands. 2 fl oz/60ml. Rahua Women's Leave-In Finishing Treatment 60ml A great designer gift. Shop Rahua at Barneys New York.