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Awasome Do I Need Developer For Ion Permanent Hair Color Ideas . Without a developer, the paint will. This is usually between 20 and 30 vol. Permanent creme hair color ion color brilliance color chart mostgaret from mostgaret.weebly.com Web yes, ion permanent needs a hair developer, and the application should be in proportion to the level of color used. Web yes, ion hair color does need a developer to achieve the desired results. Web for every hair dyeing with professional hairdressing colours it is almost always necessary to buy a developer ( oxidant, peroxide, activator ).