Large Finger Diffuser Add volume and define curls without frizzing up hair. The fingers on the diffuser work to help separate the hairs from each other for a fuller more voluminous effect. Product Specs Size: 6 ⅝" x 5" Weight: 6.36oz Model: #1922 How to use the hair dryer finger diffuser? For volume, tilt your head upside down, and place the diffuser at the root of your hair. Then move the diffuser down to the ends as it dries. To shape and define curls, start with the diffuser at the roots, and with a circular motion work your way down the hair. Be sure to move it in the same direction down the hair. To add volume with this technique, lift the roots by keeping the diffuser at a 90 degree angle from the scalp. To help set the hair, finish with a cool shot.