Testing, Testing A series where we methodologically and obsessively try new products to tell you if they’re worth it so you don’t have to do all that work yourself. Read more reviews here . The results on the left are from my Dyson, and on the right, my Shark. Photo: Najwa Jamal I have fine, curly hair that tends to be a little dry. That means my blowouts are often laborious ordeals and turn out frizzy — and I’ve long yearned for a blow-dryer that could smooth my hair from root to tip (without