Resistant hair needs alot of heat, so an iron that has a maximum temperature of 430-450 degrees would be the best bet. I have an Andis Nano Diamond (430 max) that I haven't used on myself yet, but have used on very resistant relaxed hair w tons of new growth and it got it bone straight. I don't know if there's a ceramic iron that fights reversion. My hair reverts even while I'm ironing When I was natural earlier in my life, the only thing that kept my hair straight was the heat of a marcel flat iron. Of course those aren't the healthiest option, but if I ever wanted my hair forreal straight, I'd use one.You are not allowed to view links.Register or Loginhttp://www.youtube.com/watch?v=uCZpM0S7jEw#noexternalembed