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Hair care is a strongly growing market within the personal care industry. The most representative sectors of this market are hair conditioners, shampoos and hair dyes. Currently, there is a growing trend to formulate products that are safe, both to humans and to the environment, due to consumer perception and to regulations. In addition, regulations in Europe are getting more and more restrictive [1], so there is a great deal of market interest in readily biodegradable and non-environmentally-toxic products [2]. Alkyl amidoamines properly neutralised with an acid, are a good alternative to monoalkyl quats, such as Cetrimonium or Behentrimonium Chlorides, in hair rinse formulations [3]. In general, alkyl amidoamines, when compared to monoalkyl quats, are more compatible with anionic surfactants and easier to work with. Furthermore, these molecules in the cationic form show a higher affinity for the hair surface than …