Do you need heat protectant for diffusing?
This is essentially the goal we are trying to attain when diffusing curls. DON'T- Skip on a heat protectant. The best way to stop damage is prevention. By using a high strength heat protectant you can be sure that your curls are safe while adding extra hold, volume and shine to your style.
Do diffusers cause heat damage?
Diffusing reduces heat damage but can't nullify it completely as it's connected to a hair dryer. ... Even if you use a diffuser, if the hairdryer is on high heat, it will most definitely cause heat damage. Diffusing daily can be very damaging. You should only do it a few times a week.