Encouraging the look of strengthened hair, Redken’s Acidic Bonding Concentrate Intensive Pre-Treat Routine Bundle features a four-step system to nourish the tresses. Fortified with the brand’s Bonding Care Complex and citric acid, hair appears more vibrant and is protected from excess breakage. Set Contents: Acidic Bonding Concentrate Intensive Pre-Treatment 150ml A 5-minute, rinse-off, pre-shampoo treatment powered by 14% Bonding Care Complex with citric acid to target weakened bonds and help minimise the look of breakage. The first step in Redken's Acidic Bonding Concentrate routine, the treatment is formulated to visibly smooth the hair cuticle, promote stronger-looking hair and lock in your colour for longer. Acidic Bonding Concentrate Shampoo 300ml The sumptuous shampoo works to lessen the look of colour fading, while minimising the appearance of visible damage. Crafted to help balance the pH of your tresses, the shampoo contains an acidic pH to reduce the look of split ends, promoting the illusion of improved shine and gloss. Acidic Bonding Concentrate Conditioner 300ml Created with a uniquely acidic pH, the conditioner helps to protect weak bonds and shield your hair from the look of further breakage caused by heat and colouring, allowing it to maintain a silky-soft finish. Acidic Perfecting Concentrate Leave-In Treatment 150ml Providing heat protection of up to 230 degrees, the leave-in conditioning treatment helps to protect hair from thermal damage, while softening the tresses for an ultra-smooth result.