Build-A-Bond Super Sealing Leave-In Balm is packed with 1 billion bonds in every bottle to fight damage! This leave-in balm has a rich texture that evenly coats hair from root to tip, providing protection against breakage, frizz for up to 72 hours, and heat up to 450°F/230°C. It is formulated with citric acid to strengthen your clients’ hair from within, while squalane softens and smooths the outside.