T3 Fit Diffuser in Beauty: NA. T3 Fit Diffuser in Beauty: NA. The T3 Fit Diffuser is designed to volumize, define curls, and eliminate frizz for wavy, curly or coily hair. Its vented finger extensions distribute heat gently and evenly to speed up drying, while lifting and separating hair for enhanced volume and body.. Compatible with the T3 Fit dryer only. Distributes heat evenly for fast-drying with volume and body. Even heat distribution prevents over-drying. Helps define curls. Attach the diffuser to the T3 Fit Dryer (sold separately). Select your optimal heat setting on the dryer, then blow dry hair focusing at the roots. While drying, scrunch the hair with the diffuser from ends to roots to create defined waves and curls. TTHR-WU33. 76883. T3 ignites your styling imagination with next-gen technology to transform the styling experience and deliver the hair you love. They strive to make your experience better all around - faster, easier, more inspired, and healthier for your hair. Their high-performing, thoughtfully designed tools enable a smoother routine, whether you're feeling experimental, or rushing out on a busy morning. So you can look forward to the process almost as much as the final results.