Mona Harb says she's very excited about this product line because it gives hair hydration that's needed during the long winter months when heated interiors sap moisture causing dry brittle hair. Ingredients like Argan Oil, and Castor Oil leave hair luminous. Plus it's Paraben, Petrolate, and Sulfate free. The Leave-In Conditioner works great even if you choose not to use it with the "zero frizz" Curve Defining Jelly.