A diffuser works by spreading the airstream over a wider area in a more controlled way. Diffusers are great for those with curly to wavy hair types as it can help to keep the natural curl pattern. Without a diffuser, you can easily blow curls out of shape and into a frizz.
Is a diffuser better for your hair?
"The benefits of using a diffuser are faster drying time, and bouncier, fuller, voluminous curls," Emilio says. "Diffusers diffuse the air, aka, they disperse it, which means it prevents the dryer from roughening up the cuticle of the hair. It protects curls from frizz."
What does diffusing do to your hair?
Chelsey: Diffusing hair is a drying technique that uses a dryer attachment to "diffuse" the airflow; this cuts dry time, reduces frizz, adds volume, boosts your curl formation and gives longevity to your style.