Question:How does keratin help to strengthen hair? Answer:Keratin is a protein that is naturally found in hair. Using a shampoo that contains keratin can help to strengthen hair by replenishing lost protein and repairing damage.
Question:Is It's A 10 Miracle Shampoo Plus Keratin safe for use on chemically treated hair? Answer:Yes, the shampoo is safe for use on chemically treated hair.
Really salon level color