well from what i know about heat styling, the heat option dries hair faster and after its dry you go over your hair with the cool option and that sets your hair in place and gives it a shiny finish, as does rinsing with cold water after you finish shampooing :)
The heat is faster and will damage your hair more though. If you us the heat, face it downwards and I'm pretty sure this will keep you from having as many split ends
the heat setting will damage your hair real bad but its really quick and then you can use the cold setting to add sme more volume to your hair.
The cold setting won't damage your hair as much, but the hot setting dries faster ... choose your setting based on your current needs.
i always use the heat setting for a fsster drying time then i use the cool setting to add more volume to my hair and it really works
the cool one won't dammage your hair as bad, but it makes your hair look oily and takes way longer.!
cool, heat can damage your hair, as colleen said though, cold air will take longer to dry
I think you should use heat. That's what I use every morning.
The cool for sure, the more heat the more damage