Suave Professionals Keratin Infusion Smoothing Conditioner infuses hair with keratin and leaves hair sleek, smooth and easy to style. Formulated with Keralock Technology, our lower sulfate, PH-balanced conditioner provides lasting smoothness and frizz control for up to 48 hours. Enjoy the luxurious, long-lasting fragrance. For stunningly sleek & smooth hair, massage conditioner into hair after using Suave Professionals Keratin Infusion Smoothing Shampoo. Leave in for 1-3 minutes to let the luxurious formula infuse every strand. Rinse.