Review title is NOT universal. [SEP] Would live to say that this was the best hair dryer diffuser I have ever used... the problem?  The &#34;universal&#34; diffuser would not fit either of my blow dryers, which are your basic brands and sizes. The diffuser must be used with a dryer that is either narrow or tapered. It appears to be a quality product, but doesn't meet my needs and is destined for the charity bin.