The Matrix SoColor Sync Acidic Toner range is formulated to deliver multi-dimensional, tone-on-tone, semi-permanent colour with no chance of base shift, for a brilliant result without ammonia. The SoColor Sync Acidic collection is an ideal colouring solution for those concerned with damage. The acidic base, cream formula delivers pure deposit only toning with no lift. Each conditioning formula is blended with Bond-Protecting Concentrate which helps to maintain the integrity of the hair structure, colour after colour*. The formulas are pre-blended with both background and reflect to help control warmth on every colour, every base, and every underlying pigment. The SoColor Sync Pre-Bonded Toners are perfectly colour-matched with SoColor Pre-Bonded permanent shades, so you can achieve seamless, root-to-tip colour that lasts and fades on tone. Key Benefits: ul.kit li {list-style-type: disc; margin-left: 15px;} Pre-bonded, helping to protect the inner hair structure, colour after colour* (*Assessed after 7 applications on sensitised hair) Pre-blended with both background and reflect, ensuring all underlying pigments and warmth are neutralized Pre-Paired with our SoColor Sync tone-on-tone range for seamless results from root to tip Pure deposit only toning with no lift, for multi-dimensional colour that lasts up to 20 shampoos Click Here to read the SoColor Sync Pre-Bonded Toner Technical Guide.