- Smooth and tame unruly, frizzy hair with this gentle cleansing formula. Moroccanoil® Smoothing Shampoo with AminoRenew™ restores depleted amino acids to strengthen hair and align its natural keratin structure. Infused with argan oil and argan butter, this hydrating shampoo gives you more manageable, healthy-looking, smooth hair. When used with Moroccanoil Smoothing Conditioner, results can last up to 72 hours. Massage Moroccanoil® Smoothing Shampoo throughout wet hair and scalp, adding more water to activate a rich lather. Rinse thoroughly. Follow with Moroccanoil Smoothing Conditioner.