b3 Brazilian Bond Builder hair structure rebuilding system

b³ Brazilian Bond Builder is a breakthrough professional tool clinically shown to penetrate the cortex of the hair, and proven to reattach the bonds that are broken during all color services by utilizing an anhydrous delivery system and specifically engineered co-polymer to dramatically reduce damage while improving color retention with no change to developer and no added processing time. Easy-to-use one-step system is added right to your color and lightener formulations with no additional processing time!