Enhancer: Lustrous Repair for Damaged & Sensitised Ends. Temporarily repairs damaged ends & smoothes cuticles for crystal-clear shine. Kerastase Nutritive Gluco-Active: The first Gluco-Active haircare programme to boost nutrition from root to tip. Personalised dosages of glucose, lipids & proteins, for dry, sensitised hair. Hair is replenished with softness & left light & supple with an incredible shine.