HBWA Professional Powder Bleach with toners.
Directions: Empty desired amount of bleach powder into a non metallic container then add peroxide: 10vol, 20vol, 30vol or 40vol. Mix well until you have obtained a homogeneous consistency. Exposure time and peroxide volume should be determined by the professional at the time of use and after assessing the condition of the hair. It is not recommended to use a higher volume of peroxide than 40 vol.
Skin Sensitivity Test: Carry out this test on a spot approximately 1 cm x 1 cm on the inside of the elbow. Mix one teaspoon of powder and stir well with a plastic spoon until a creamy consistency is achieved. Then apply enough mixture to cover the area on the elbow and leave it on for about 45 minutes. Avoid contact with clothes. Then wash of the mixture with lukewarm water. If irritation or any negative reaction occurs during the test or for the next 48 hours, do not use the product.