Prevents colour fade for 10 weeks 90 Percent stronger hair With opti-plex technology Protect blonde colour, whatever your tone. From natural and honey blonde tones to white, ashy blondes, lemon extract leaves blonde hair vibrant with dazzling shine, locking in colour for 10 weeks. Opti-PLEX technology penetrates deep into the hair core to reconstruct bonds after chemical, styling and environmental damage. Developed with FragranceFuse technology that infuses each strand of hair with an explosion of fragrance that lasts for 24 hours. When used in conjunction with All Blonde Colour Lock Conditioner.