ASP System Blonde Anti-Yellow Masque 500mlASP System Blonde Anti Yellow Masque 500ml Restore the brightness of natural blonde, pre lightened, or white hair with this deep conditioning, semi permanent toning masque. Intensely nourishes while colour correcting violet pigments neutralise unwanted yellow tones and protect against brassiness. The rich and luxurious formula leaves hair smoother, softer, and healthier. White or greying hair is enhanced with a hint of silver. Contains UV filter.