Make Wavy Hair Straight

Now that it has grown out, one side of my hair has a curl that curls upward and no matter what I put in it (including hair spray) it won't be tamed down. Is there something I can do to get my hair from being wavy back to being straight again?
If you prefer a more permanent solution, you can always opt for a chemical straightening. You can use one of the myriad home straightening kits, or visit your salon for thio-straightening, or if you want a perfectly straight look, consider the Japanese Thermal Reconditioning available in many salons.
These processes can range widely in price, from less than $15 U.S. for home kits, to over $500 for Japanese Reconditioning. You can find solutions to fit your budget.
©Hairfinder.com
See also:
Hair straightening
How can I get glossy pin straight hair?
What is the best way to get truly shimmery straight hair?