The book "HAIR - Everything about Alternative Hair Care" by Antonia Katharina Tessnow offers a comprehensive and critical examination of conventional hair care products. The introductory chapters provide a detailed look at the ingredients in shampoos and shower gels, explaining their potentially harmful effects on skin and hair. The book highlights the long-term damage that can result from repeated exposure to synthetic chemicals. The main part of the work presents simple and easily implementable alternatives to conventional care products, validated through the author's personal experiments. The methods are designed to be understandable for anyone interested. The concluding section addresses important aspects such as lifestyle, nutrition, and care tips that contribute to healthy hair and vibrant skin. The aim of the book is to raise awareness for a healthy relationship with the body and the environment.