A colour-correcting mask for blonde hair. Designed to keep blonde hair looking its brightest self, Philip Kingsley’s Pure Blonde Booster Colour-Correcting Weekly Mask clarifies and nourishes brassy tones for that freshly coloured look. Deeply conditioning, the weekly hair mask is infused with violet micro pigments to correct yellow tones while increasing the strength of the hair, smoothing, and hydrating and improving hair’s overall manageability.Application: After shampooing, gently work through the hair, avoiding the scalp.Leave for up to three minutes if hair is bleached, up to five 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 before using.