Redken Color Extend Blondage Color-Depositing Mask is a 5-minute hair mask that provides enhanced tint and color to your blonde hair. Personalize your blonde instantly to a beautiful blonde hair color. After shampooing, apply mask to hair avoiding scalp area. Comb through for even distribution. Leave on for 5-10 minutes, depending on desired hue. 5 minutes for subtle hue, 10 minutes for maximum deposit. best for light to medium blonde hair looking for cool blonde