Internal and external factors can lead to severe damage of the hair structure. which result in diminished volume, the lacking of luster, increased roughness and a high tendency for spliced or broken hair. Usually damages in structure also lead to dehydration of the hair. In light cases, suited care products can solve the listed problems. But harmful external factors such as the use of a hot hair dryer or a curling iron need to be avoided. A shampoo for dry hair smoothes and restores the affected surface, thus a worsening can be prevented. When hair is already broken only a new hair cut can help. But also with a new hair cut, a mild shampoo should be used in order to counteract future damages.