It's been two whole months. I left my blowdryer at home, so I'm not even tempted to use that - and I'm not too good with the flat iron so for me, it is a mix between having the self-restrait, lacking the time, and simply not having the correct tools. I suspect that between January and June, I will use heat only two times - once to get a much needed trim and once for the fun of changing up my style. That's equivalent to using heat about 4 times a year if I keep up this record.