| abstract |
This invention is a two part system for coloring or bleaching hair which comprises (i) a thin lotion optionally comprising an oxidative dye and comprising a solvent system and a surfactant system to trigger a thickening upon dilution with a developer, and (ii) a developer which comprises a scalp-irritating amount of an oxidising agent. In the system of the invention, the lotion has a Lamellar Phase Index of greater than 80%. |