Question: what shampoo to use for keratin treated hair?
Answer: 1Moroccan Argan Oil Shampoo and Conditioner, SLS Sulfate Free. When it comes to keeping your keratin treated hair looking its best, you will want to use a sulfate and sodium free product. The Moroccan Argan Oil Shampoo and Conditioner Set is one of the best keratin treated hair products out there.