How much 30 v creme developer to use with powder bleach?

The typical ratio for mixing powder bleach with a 30 volume (30V) cream developer is usually 1:2. This means for every 1 part of powder bleach, you should use 2 parts of the 30V developer. For example, if you use 1 ounce of powder bleach, you would mix it with 2 ounces of 30V developer. Always check the specific instructions on the products you’re using, as ratiOS may vary slightly based on the brand.