A new way of understanding hair colouring through molecular cosmetics for hair and the advantages of spa master. High-tech cosmetics based on the latest developments of the French laboratory sederma. 100% natural plant extracts and oils from all over the world are used for the synthesis of raw materials. Products using only high-tech mixers, which leads to a macromolecular composition that contributes to greater penetration of the components into the skin and hair. Thanks to the large number of active ingredients, each product is unique and fulfills several functions. They have a high degree of absorption of the active ingredients and provide an instant result. Brown plus colour.