The nozzle of the blow dryer is orbicular round shape.
The diameter of the nozzle is between 1.65~~1.9 inches (4.2--4.8cm).
The dryer cylinder tapers toward the end of nozzle.
Wash and condition your hair
Add anti-frizz serum or anti-frizz product
Attach the hair diffuser to the hair dryer
Focus the diffuser on the top of your head
Use the diffuser and gently release your hair through your fingers
The product is completely useless, and there is no way to return it as the seller made sure of that, and after the purchase, there are no more diffusers available, which is very convenient for the seller