The Subrina Professional Senseo Ammonia-Free Demi-Permanent Hair Dye provides rich, vibrant color results without the harshness of ammonia. This formulation is perfect for refreshing existing color, adding shine, or experimenting with temporary shades while allowing natural regrowth. Its demi-permanent nature ensures predictable fading without the harsh line of demarcation associated with permanent dyes. It offers excellent gray blending and conditioning, leaving hair feeling soft and looking lustrous after coloring.