Colour Developer Maria Nila Developer 40 Vol 12%

When selecting a developer, consider both the desired result and the hair structure. We recommend a mixing ratio of 1:2 – bleach to developer. Using more bleach powder makes the treatment more aggressive than necessary. On the other hand, the developer creates a formula that might not be strong enough to achieve the desired outcome. Do not use a 9% or 12% developer if the product is applied directly to the hairline, as it may cause scalp irritation. Mix 1 part bleach powder with 2 parts developer. Avoid using a metal bowl, as metal can react with hydrogen peroxide. Application and Processing: Apply and leave on until the desired result is achieved. Do not leave on for more than 50 minutes. Regularly check the progress during processing. Rinse and Finish: Rinse thoroughly with warm water and wash the hair carefully. Finish with Maria Nila Silver Shot.