Split ends of hair result from the visible effect of hair cuticles opening, which are its natural protection. It is often the result of excessive use of aggressive hairdressing treatments, such as permanent waves, frequent dyeing or lightening of hair. High temperature, excessive exposure to the sun, but also to hard water, including chlorinated or sea water, especially with insufficient hydration and nourishment of the hair with appropriate hair care products, lead to the formation of micro-damages in the hair structure, which leads to a loss of smoothness and aesthetics, and instead it becomes thin, dry and split.