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. 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.