How do you use Revlon Professional Restart Color Anti-Brassiness Purple Drops?

Mix a few drops with your favorite shampoo or conditioner. Apply to damp hair, leave on for 3-5 minutes, then rinse thoroughly. Use once or twice a week for best results.

What are the benefits of using Revlon Professional Restart Color Anti-Brassiness Purple Drops on blonde hair?

Revlon Professional Restart Color Anti-Brassiness Purple Drops for blonde hair: neutralizes yellow tones, enhances cool blonde shades, prolongs color vibrancy, nourishes and strengthens hair.