Maximum performance and care when used with BLONDME colour products. Schwarzkopf Professional Precision Lightener 7 450g is Swell-control lightener for precise on-scalp services with up to 7 levels of lift. Features: Integrated Anti-Metal Bond Protection Technology to protect the hair fibre during processing for minimised hair breakage. Up to 7 levels of lift. Suitable for hair bases 3-8. Swell-control formula minimises swelling and allows utmost precision for cleaner colour results. Integrated Temperature-Balancing Complex provides a pleasant cooling effect during processing.