A professional color-correcting wash from Schwarzkopf's neutralizing range, formulated to counteract unwanted orange and red undertones left behind after a lightening service. It's a targeted corrective product — its companion, Goodbye Yellow, is formulated instead for brassy yellow tones — and it's applied at a pH of 4.5 to support the hair's cuticle after lightening.
This is a professional-technique product: it's applied by a stylist wearing gloves, since the neutralizing dye can stain skin, clothing, and surfaces if handled carelessly. Clients typically maintain the result at home between salon visits with reduced-frequency use, but the corrective service itself is a professional application, not a first-time do-it-yourself treatment.