Keracare silk n seal, or some kind of serum. I was thinking about trying PM seal and shine or something like that...I also think the quality of your flat iron affects how good it comes out...I got a crappy cheap one that Im returning to Sallys, it didnt even have a temp control. Im going to invest in HAI or CHI/FHI ceramic iron, Ive seen them for 55-65 online lately.