7 minutes!
This is exactly what I expected and needed. I recommended it to a friend after the first use. I also suggest including a spray or other product to protect your hair from the heat. It took me exactly 7 minutes from heat up to hair down. I also did my daughters naturally (spiral) curly hair. Hers is thicker than mine and I did go over it more than once, but it still only took 10 minutes.
Rating: 5 stars