The purpose of the book on light therapy (photobiomodulation) in the beauty salon is to provide a comprehensive guide for beauty specialists and other professionals in the beauty industry interested in implementing this therapy in their practice. The book aims to give readers a clear understanding of (red) light therapy, including the scientific basis, applications, safety guidelines, and practical implementation. Through this book, I aim to educate beauty specialists and professionals about the benefits and possibilities of light therapy for various skin conditions and beauty treatments. It serves as a reliable source of knowledge and practical tips, enabling readers to apply light therapy effectively and safely in their salons. In essence, the goal of the book is to provide a comprehensive resource that empowers beauty specialists and professionals to comprehend, apply, and communicate the benefits of light therapy to their clients while adhering to best practices and safety and quality guidelines.