Heatless hair rollers have become a popular trend in recent years because they style hair without the need for high temperatures, avoiding damage to the hair. Compared to traditional electric curlers, heatless rollers are not only more affordable, easier to use, but also help maintain hair health effectively. They come in various styles and materials, such as foam, silk, or Velcro, suitable for different hair types. You can easily create voluminous curls or wavy hairstyles at home, and some can even be used overnight.