IGORA ROYAL 4-6 60 ml IGORA ROYAL 4-6 60 ml IGORA ROYAL 4-6 60 ml The IGORA ROYAL 4-6 permanent hair color is a gentle, ammonia-free formula that provides up to 100% gray coverage with intense shine. The mild formula is enriched with amino acids and keratin to nourish the hair and leave it feeling healthy and soft. The color result is intense and vibrant, with long-lasting results. The IGORA ROYAL 4-6 permanent hair color is the perfect choice for all types of hair, including fine and damaged hair.