I'm a big fan of shine sprays to finish off your look and add some shimmer to your hair! I normally use TIGI Headrush shine spray, which can be used before straightening to protect against heat damage. I was sent some Clynol Look Lustrous Shine Spray (£6.50) to try out, which has similar packaging to Headrush and smells lovely too. I've previously used Clynol products before through my auntie who is a hairdresser and used to get me discounts at Sally's!
Having used this product a few times, along with the Look at Me Centre Stage which smoothes your hair, my hair definately felt softer and shinier and smelt nice too after straightening! Plus the Clynol Shine spray is half the price of Headrush and leaves your hair just as shiny, so definately worth checking out!