Final answer:
A blow dryer is needed to perform a chemical blow-out, which involves using heat to achieve a voluminous and smooth look.
Step-by-step explanation:
An implement needed to perform a chemical blow-out is a blow dryer. Perms and chemical straightening or relaxing involve applying chemicals to the hair, which is then manipulated to produce specific styles. In a chemical blow-out, the hair is blown out using heat from a blow dryer to achieve a voluminous and smooth look.