The color performance you love, with significantly less odor. Odor Trapping Technology encapsulates ammonia molecules to minimize odor. The new smooth texture facilitates removal & blending. less ammonia odoreasier blendingup to 100% Grey coveragemore careeven, rich color from roots to endsflawless applicationsofter hairvegan formula The mixing ratio is the same: 1:1.5. To achieve full performance (better mixing & greatly reduced odor), only mix the new Majirel with the new developer.