Wella Professionals Illumina Color permanent hair color in the shade 637 Dark Blonde Golden Chestnut delivers professional hair coloring results with a 60 ml formulation. This permanent hair dye system provides reliable, long-lasting coverage while preserving hair structure through advanced color technology. The Dark Blonde Golden Chestnut shade offers a warm, naturally looking blonde with subtle chestnut undertones, creating dimensional color depth. Formulated with professional pigments, this color ensures even color distribution and consistent results across all hair types. The ammonia-based permanent color system provides complete gray coverage while lightening the natural hair color by up to three levels for enhanced brightness. The creamy consistency allows for easy application and thorough saturation from roots to tips. After the processing time, the hair retains softness and manageability with reduced damage compared to conventional permanent colors. Suitable for salon and home use, this professional color system includes everything needed for a complete coloring service when used with the recommended developer. The compact 60 ml tube provides enough product for medium-length hair applications. Wella Professionals technology ensures that color intensity is maintained over multiple washes while preserving the natural shine and texture of the hair. This shade works particularly well on natural hair colors ranging from light brown to dark blonde, creating a warm, sun-kissed effect with dimensional highlights. The formulation contains care substances that protect the hair during the coloring process while delivering rich, long-lasting color results.