Go blond!

If the sun is not co-operating, but you long for a sun-streaked look to brighten up your dishwater-blond or dull brownette locks, you might want to try John Frieda Sheer Blonde Go Blonder Controlled Lightening Spray. It contains hydrogen peroxide with citrus and chamomile, and works with the heat from a blow dryer. It lightens blonde to light brown shades, and is safe for chemically-treated hair. This is a fun option for natural blondes, or for those with light brown hair, who want a natural sun-streaked look. It contains violet pigments that neutralize brassiness. You can play with it to get a streaked-look, or just lighten your hair. If you overuse it, it may dry your hair as it contains peroxide. 

The instructions on the box say it can be used to “blend roots.” It might work to blend subtle highlights, but I would not use it in place of salon lightening or on bleached or straightened hair. Call the number on the box or ask your stylist, if your hair is at all fragile.
John Frieda Sheer Blonde Go Blonder Controlled Lightening Spray is a fun, easy and inexpensive way to get pretty blond highlights, or go a shade lighter for summer.