I have a chin length blunt cut bob. My hair is naturally straight but will wave if I dry with a diffuser and product. If my hair dries naturally then it has an amount of frizz over the top and especially at the parting. If I use straighteners or a babyliss big hair then I can get it to be nice and smooth with product and a comb of hairspray over the top. However I really like the look of making messy waves with straighteners (a bit like caroline flacks hair). the problem is that when I do this, it seems to dry it out and I get loads of frizz at the parting and over the top and it just looks messy bad instead of messy good. I have tried morrocan oil, frizz control serums or creams over the top but none of them help. What am I doing wrong??