If blonde hair has barriers on it, Lilac Grey will not be able to penetrate through the hair cuticle, so make sure you clarify the hair, then use Lilac Grey again. Next, review what base shade you were applying Lilac-Grey onto. To display as a pure Lilac Grey, the shade must go onto pure white or platinum blonde hair. The darker the base level, the more subtle the result will become. Whilst Lilac Grey is very effective at neutralising orange tones in brunette shades, it cannot display as ‘Lilac Grey’ in such depths.