Brand New in Box. With the Calista Triangl Heated Detailer Brush, you can handle all the details: add extreme lift and volume, smooth, straighten and de-frizz, flip, direct and control unruly cowlicks with just one easy to use tool! Triangl uses fusion technology that promotes shiny hair, long-lasting style, creates volume and smoothes hair. Separate dry hair into bottom and top sections. Glide down to straighten or under section at the root for volume.