Ref Stockholm 4.4 Copper Brown a 50 ml semi-permanent hair dye, ideal for those looking for an intense and vibrant color without giving up a vegan and cruelty-free approach. The delicate formula, free of ammonia, ensures uniform coloring and optimal duration, giving warm and natural reflections. The soft copper brown shade illuminates and enhances every type of hair, ensuring shine and a silky softness to the touch. Easy to apply, this color is perfect for those who want to renew their look in a simple and sustainable way. By choosing Ref Stockholm, we opt for a treatment that respects both the hair and the environment, with professional results visible from the first application.