I straighten almost every week and my hair is very healthy. I wash and condition. Then I use a deep conditioner and sit under the dryer for about 15 min. I comb it out while the conditioner is still on with a wide tooth comb. After I rinse the conditioner out, I spray with leave-in conditioner. Then I rollerset with big rollers (purple and gray) and sit under the dryer until it dries. After it dries, I remove the rollers spray some heat protectant and wrap it up while the flat iron heats up. I then flat iron my whole head. The rollers get my hair pretty straight (use the largest ones you can for the length of your hair), but the hair that is exposed while it is rolled is really wavy. After I finish flat ironing, I wrap it up and go to bed. (I have to wrap it that first night. It makes it so much better the next day.)
I use the leave-in in place of setting lotion. You can see the products I use in the siggy. (I'm really cheap.) I hope this helps. I know it sounds like a lot, but I did this when I had a relaxer too so it just seems normal to me. People always ask me what I do to my hair and when I tell them they go
. Let me know if you have any more questions. I'll try to add some more photos soon. I really reccomend the rollerset before the direct heat. I avoid blowdryers at all costs!