My experience has been that Sam's curls need to be reset a bit, but that could be because I've always downy-dunked older, PM Sam, whose hair was often limp anyway.

I set them in my curlers (unheated) and then used my all-plastic steamer to reset the curls.

I've never tried a curling iron; I'd be afraid that it would melt the hair.

I have used the AG curlers, but they seem like they give tighter curls than Sam's normal ones.