OK, we are SO trying this.

If you have greasy hair then you know the struggle. It appears lovely and clean one minute and then next you look like you were dipped in a frying pan. Same with frizzy hair, but in this instance, it looks like you've been dragged through a bush. And even if you try to blast some dry shampoo in it, it only lasts a day or so before your hair is an absolute 'mare. But this new hack, which was invented by hairstylist to the stars Jen Atkin, is going to save us so much time and effort... oh, and it also deals with frizz as well, so you know, it's a win-win. So, moving onto what the hair hack actually is. Introducing Ouai Anti Frizz Hair Sheets that you can buy on ASOS. The product is just like blotting papers, except it gets rid of your frizzy, manky hair when humidity hits. And as for the ultimate way to handle greasy hair? Well, Jen told Cosmo her ultimate hack. "No one thinks about this, especially if you're a girl who suffers with a greasy scalp. But you should wash your hair with two different shampoos, because the root and ends are such different hair. "Think about it, the ends of your hair have usually been coloured and are pretty dead. So you wanna use a hydrating shampoo like our Ouai Repair, or Ouai Smooth to wash the ends with, but you want to wash the roots with a more cleansing shampoo, like Ouai Volume, or Clean. Wash the roots first, then wash the ends and you're good to go," she said. (Side not: My hairstylist actually told me to use cleansing shampoo to get rid of build up and it has worked SO well since I started using it.) You can check out the entire collection here.