Smooth Intense Instant Smoothing Serum provides immediate smoothing and deep nourishment that lasts 48 hours.The texture and the shine of your hair is renewed. LOreal laboratories have succeeded in combining Argan Oil and Silk protein, which is naturally rich in essential fatty nutrients – • 48 Hour Protection – The creme formula nourishes and smoothes your hair from root to tip making it look more smooth & manageable. • It shields your hair from the effect of humid or dry weather.