The WELLA Post Colour Lightening Service is a 1000ml post colour antioxidant treatment designed to protect and repair chemically treated hair. With a period after opening (PAO) of 12 months, this treatment from the trusted brand Wella is a must-have for those looking to maintain the health and beauty of their locks. Ideal for keeping hair looking vibrant and nourished after a colour treatment, this product is a valuable addition to any hair care and styling routine.