If your hair is short and unruly, or it simply doesn’t hold curls all day without extra hair sprays, 1-inch curling irons are the way out. With the barrel being 1 inch in diameter, this iron can create tight spiral ringlets and curls that will not lose their shape all day long, and even longer. For this review, we’ve selected only the most popular brands that produce curling irons 1 inch in diameter so that you can find the best one for your needs.