Neitsi KS62652A Online Plaited Synthetic Hair Plait Headband Thick Braid Hair (R14/88#) <span class="a-text-bold">Can I curl the hair extensions?</span><br> Yes, you can. The hair extensions is the heat-friendly hair fiber so you can restyled it with the scissors or curling iron. It will be better to wet the hair extensions before you curl the hair which will make you curl the hair more easily. However, do not like the real hair, it&#039;s not easy to make a big curly the same as it before. The hair extensions factory is using the special equipment to make a big curly.