What it DoesInstantly make any cream-based product into a toner. Banish brassiness and achieve instant icy toning with Keracolor's semi-permanent toning drops! These customizable drops can be washed out or left in for perfectly personalized hair toning.Highlights• Neutralizes unwanted brassy or yellow tones• Mixes easily with your favorite cream-based products• Create your own custom purple shampoo/conditionerHow to Use "(FOR ALL HAIR TYPES)DIRECTIONS: 1. Use 1-3 drops for subtle toning results or 4-10 for deeper toning 2. Ideal for cream-based products mix with product of your choice in the palm of your hand before applying to your hair. 3. To prevent color from staining, wash hands immediately after use.SKIN ALLERGY TEST: Using either soap or water, clean an area behind the ear or on the inner surface of the arm. Apply a small quantity of the hair dye, as prepared for use, to the area and allow it to dry. After 24 hours, gently wash the area with soap and water. If no irritation or inflammation is apparent, it may be assumed that no hypersensitivity to the dye exists. The test, however, should be carried out before each application. "Hair Type: Curly, Straight, Textured, Coily, WavyFeatures: Travel SizeConcerns: Hair ToningFluid Ounces: 2 oz.Ingredients: Sulfate-Free, CleanFormulation: LiquidCountry of Origin: Made in US