Ref Stockholm Permanent Color 4.0 Brown is a high quality hair dye, designed for those who want intense and long-lasting color. Vegan formula, free of harmful ingredients, guarantees respect for the skin and the environment without compromising performance. The product gives uniform coverage of the hair, enhancing the natural shine with a deep and vibrant brown shade. Easy to apply, it offers long-lasting wear that keeps color vivid and resistant to fading. The 100 ml package is perfect for practical and controlled use. Ideal for those looking for an effective, safe and nature-friendly solution, combining professional care and ethical attention.