Blond Studio 4 hair lightening cream, designed for subtle, multi-dimensional highlights. Controlled lightening: up to 4 levels, without compromising hair integrity. 46% less visible hair damage. A subtle, multi-dimensional effect – even on dark bases. Preserves hair softness during the lightening process. Suitable for natural and colored hair. Lightens natural hair by up to 4 levels and colored hair by up to 2.5 levels. Instrumental test compared to a traditional L'Oréal Professionnel lightener.