I bought a sedu and I've used it twice on my 3c hair. Both times it come out big, poofy, and fragile feeling. I used biosilk thermal protectant and silk therapy each time. Once I used my normal amount of conditioner; the second time I really layered it on. Once I blew it dry. The other I let it air dry. I've seen before and after pictures of girls with fros like mine ending up with perfect hair. I've tried ironing very small amounts at a time and i'm using max heat. Nothing seems to work! Any clue what I might be doing wrong?