The Eugene Perma Solaris Ultimate Toner in 'Gray Aventurine' is formulated to deliver refined and sophisticated hair color results. This specialized hair treatment is designed to neutralize unwanted tones while depositing a beautiful, cool gray hue. It is ideal for professional application when precise tonal correction and long-lasting color vibrancy are required. Use this toner to achieve contemporary, cool-toned gray finishes on pre-lightened hair.