In other words, each section of layered hair curves inwards, like this cut posted to Instagram by hairstylist Ryenne Snow. The shorter layers sitting on top of longer ones give the illusion of thickness and more shape, even if your hair is on the fine side. “If you were to turn the head upside down,” adds Douglas, “you would see a hollowed shape. Hair would be longer on the outside and shorter on the inside.” Hairstylist Kayla of Hardcore Hair demonstrates the finished result beautifully on TikTok.