do u mean DURING a stretch?
I basically do the same thing. At week 8 I will get a Aphogee treatment, dust, and may flatiron it or just braid it back up and 8 weeks until 16 I am under my LF with cornrolls. Then a week before I do another Aphogee treatment which will be at wk 15 and on 16 I relax and dust.I get a trim every two months so i flatiron at 8wks and relax at 16wks. So i voted flatiron?