A strengthening shampoo that stimulates hair growth already at the roots and thus guarantees strong hair growth. Weakened, brittle hair is strengthened as its inner structure is rebuilt and enveloped in a protective film, which provides optimal protection throughout the growth period. This cleansing shampoo is enriched with Creatine R, an active ingredient complex that promotes the resilience and resistance of the hair, and Taurine, an amino acid that ensures a healthy scalp. The hair is thoroughly cleaned to achieve its ideal, healthy length in optimal conditions.