Right after the very first use of TRESemmé keratin smooth with marula oil l could see a difference in my hair, being a person with naturally coarse hair, l have always been out and about looking for products to help better the texture and l have tried so many things on the shelf without luck, but l must say tresemmé brought back that marshmallow feelling to my hair, my hair felt really soft and the shine oil did a great job with restoring moisture. This is a product every person with hair problems should have, l will be continuing to use it .