Give your hair juicy highlights -- with juice! Lemon juice is a natural lightener that will brighten up any dull dark to light blond color. You can either dilute the lemon juice with water or use it straight; the more juice you use, the lighter your locks will be. The easiest way to apply it is by filling up a spray bottle with the diluted or straight lemon juice, then misting your entire head for even coverage. Then, just sit out in the sun and enjoy the rays -- the sunlight reacting with the lemon juice is what will lighten your hair.
Purchase some hydrogen peroxide lightening spray and mist your head evenly. This stuff produces dramatic results, according to Ladies' Home Journal, and is also heat-activated. If you're not into sunbathing -- or if it's wintertime -- you can actually just blow dry your hair after spritzing it on.
Slap some good old-fashioned hair bleach on your head. Of course, it's not as simple as that. Highlighting kits can be found in most drugstores and beauty supply stores, and usually include a highlighting cap, tint brush or highlighting comb and the required chemicals. Kits are always a good purchase, especially if you're a beginner when it comes to hair color. Just follow the directions carefully and you'll get the results you want.
Get it done professionally. Stylists know what they're doing, and if you don't -- know what you're doing, that is -- it might be a good idea to check out a salon to get your hair lightened. Salons can do all-over lightening or highlights, as many or few as you want. A professional also knows the best color to use for your skin tone and natural hair color.