Product features no.3 hair perfector repairs damage to the hair thanks to its patented bond strengthening technology bis-Aminopropyl diglycol dimaleate. It restores damaged hair to its former glory by repairing broken bonds. It repairs and strengthens hair very intensively. Suitable for all hair types. Does not contain paraben and sulfate. It is vegan. It is not a hair conditioner - it is a care product that is used and rinsed before shampooing. no. 7 bonding oil contains the star ingredient bis-Aminopropyl diglycol dimaleate, formulated to strengthen damaged bonds in the hair. It significantly increases brightness, softness and color vibrancy while minimizing frizz. Provides UV/heat protection up to 232 degrees. The safety and performance of Olaplex products have been extensively tested by independent third-party laboratories in accordance with in-group industry standards.