the best method for me is this: i wash and deep condition, wrap my hair in a towel for a while, then add l'oreal smooth intense serum, then comb into a bun and leave it like that until the front part is almost completely dry. then i take the bun out and blowdry my hair, which by now is only damp and the front is already dry and straight. this puts less stress on my hair also. i don't own a flat iron so i can't give you any advice on that. sorry,
nay.