Schwarzkopf Fibreplex 2 Bond Sealer is step 2 of their revolutionary Fibreplex treatment that's designed to strengthen hair as part of the a colour service.

You use it after you've applied the colour that you've mixed with Fibreplex 1 Bond Booster.

The Bond Sealer is designed to complete the bond enforcing process giving hair long-lasting suppleness and shine. To use, apply twice the amount of Bond Sealer to the amount of Bond Booster that you used. Leave in the hair for 5-10 minutes then rinse out and style as usual.