Sun in hair spray, a hair lightening product, harnesses the sun's UV rays to gradually lighten hair without the use of peroxide or bleach. Simply spray it on and spend time in the sun to achieve natural-looking highlights.
Sun in hair spray is particularly popular among those seeking a sun-kissed look without the commitment of permanent dye. It's gentle on hair, doesn't contain harsh chemicals, and can be used as often as desired for gradual lightening. The product's origins can be traced back to the 1970s, when it was first introduced as a way to mimic the natural lightening effects of spending time in the sun.