7. Lime
The best place to buy is Walmart.
Product Price on Average: $0.57*
Who would have guessed that a straightforward lemon slice would have so many undiscovered uses? Because they are acidic, lemons can be used for a variety of purposes. Their capacity to brighten hair is one such application. Light brown hair will become blonde with just a quick application of lemon juice and some heat from a hairdryer or exposure to the sun.

@IgorZh/SShutterstock Lemons
Lemons can also be used to freshen the odor of a garbage disposal after getting rid of something smelly. Lemon juice that has just been squeezed has the potential to tighten wrinkles and even help treat acne and persistent blackheads.
