Matrix Instacure Build-A-Bond Super Sealing Leave-In Balm is infused with citric acid & squalane to strengthen hair from the inside out, soften strands & protect against frizz, breakage & heat up to 450°F. Formulated with power couple ingredients including citric acid that strengthens hair from the inside, squalane to soften & smooth on the outside. Professional formula: Professional grade formula tested and approved by hairdressers. A thick pink balmy cream, super easy to distribute, fast absorbing and not greasy. Fragrance notes include juicy lemon mergers with the lemon blossom, as well as peony, and fig for a premium twist, and rests on a bed of amberwood and musks.