Formulated with exacting levels of violet micro-pigment, this Pure Blonde Booster Mask nourishes and brightens brassy bleached hair. Ideal for correcting yellow and brassy tones, this weekly deep conditioning mask imparts a just-coloured look. Use alongside the Pure Blonde Booster Colour-Correcting Toner Shampoo to leave your tresses luminous, toned and neutralised. Benefits of Philip Kingsley Pure Blonde Booster Mask: Ideal for bleached hair Targets brassy hair Smoothes and hydrates Improves elasticity How to use:  After shampooing, gently work through the hair, avoiding the scalp. Leave for up to 3 minutes if hair is bleached, up to 5 minutes if hair is dyed, and up to 10 minutes if hair is naturally blonde. Rinse thoroughly. Use once per week. These timings are a guide only and should be halved for first use. All hair will react differently so test a small section of your lightest hair before first use. Wait at least two weeks after having hair coloured, bleached or permed befo