I just play it safe and avoid ALL heat as much as possible. I don't use direct heat at all. However, I do sit under a bonnet dryer (indirect heat) for about an hour to partially dry my rollersets, then I airdry. I use the bonnet dryer on LOW setting, which feels about the same temperature as someone blowing on my hair, so I'm good.
My hair is much healther and free of split ends since I eliminated the heat.
My hair is much healther and free of split ends since I eliminated the heat.