Decibel guarantees the utmost respect for the hair structure. It performs an emollient, moisturising and conditioning action thanks to specially selected ingredients like Argan Oil and Wheat Protein. Activators are an essential part of permanent colouring, allowing the colour to achieve its full potential. With this in mind, we have created specific and perfectly balanced activators to obtain the best results with Arpège Opera Lightening Products, eliminating fragrance to reduce the risk of allergies.