Bust Through Brassiness! This Powerful Toning Blend Helps to Brighten Blond Strands. Add to Shampoo, Conditioner or Stylers to Help Color-Correct Yellow Tones on Silver, Prelightened or Natural Blond Hair. Say buh-bye to brass with OGX Blonde Enhance+ Purple Toning Drops. This highly pigmented and potent dark purple liquid dispenses into drops to add to your favorite shampoo, conditioner or cream-based styling products. Use it to brighten and color-correct yellow tones on silver, prelightened, or natural blonde hair with strengthening ingredients like keratin, purple fig and iris. Rinse out or leave in. However you use these customizable drops, banish unwanted, brassy tones. Free of sulfated surfactants and parabens.