Oxidant - it is a creamy liquid that activates the dye. One of the most important elements of hair dyeing is choosing the right oxidant. Choosing an oxidant that is not suitable for the process you will do - may lead to undesirable results. For this reason, you should make your oxidant selection as carefully and carefully as your dye selection. Be careful to use the same brand of oxidant as the dye you choose. You can easily choose the oxidant suitable for the process. 10 Vol Oxidant: To darken the hair color - 20 Vol Oxidant: To cover the white - 1-2 tone lightening process and to dye the hair in the same tone - 30 Vol Oxidant: To lighten the hair up to 2-3 tones - 40 Vol Oxidant: It should be preferred for lightening the hair by 3-4 tones and for highlighting and balayage applications. Returns of opened products are not accepted.