Wella Koleston Welloxon Perfect 13 vol. 4% 1000ml a fundamental professional product to guarantee excellent and long-lasting coloring results. This oxidant with a balanced formula ensures optimal color penetration, allowing uniform and natural coverage even on difficult hair. Ideal for mixing with dyes Wella Koleston promotes controlled and delicate color development, keeping the hair fiber soft and nourished. The 4% concentration (13 volumes) allows lightening up to one or two tones, offering versatility and precision in applications. The 1000ml package, designed for professional use, guarantees practicality and convenience for salons and beauty centers, ensuring professional results with every use.