Futura is the first heat resistant fibre that is also fire-retardant. It can be blow-dried and heat styled. [tonged] This makes it incredibly versatile, you can change your look in minutes without changing your extensions Straight one day, ringlets the next, the possibilities are limitless! Electric Irons are recommended; set to 8 on 1-10 scale or 'High' on Low, Medium High scale Apply tool for 20-30 seconds, support the curl as it cools for best results.