Matrix Instacure Build-A-Bond Super Sealing Leave-In Balm, Billion Bond Care to repair mega damaged hair! Professionally formulated with citric acid u0026 squalane to strengthen damaged hair from the inside and soften u0026 smooth hair on the outside The rich texture evenly coats your hair from lengths to tips for up to 230C heat protection. Instrumental test after application of Sealing Balm To Use: Apply on wet hair, from the mid lengths to the ends. Do not rinse.