WOW! "I went redder one day and added ombré streaks the next—it was so fun!"
HOW The mousse-like substance seeps through holes in the brush-on applicator. Just stroke it through strands, let it dry, then marvel at your new temporary highlights. The hue washes away after one shampoo. (Note: The blond shade looks best on light hair; it can appear a tad ashy on dark locks.)
Alterna One Night highlights in Ravishing Red, $29; at Sephora.