You may not be able to remove the henna red tones completely. To go from red to lighter or blonde would require a professional stylist experienced in haircolor corrections. With the EcoColors home kits you could go darker by using a diluted formula (process for previously colored hair) all over for 10-15 minutes. Medium Ash Blonde and Light Brown or Medium Ash Brown mixed with Light Brown. Strand test to test for product compatibility and to see it is the desired end result before applying all over. Allergy test is recommended according to kit instructions.
