I bought this as an add-on and I was very excited to try it because I love Protect & Defend so much. I don't get the same smell that other reviewers do, in fact, I don't think it has much of a smell at all. This is good to use for day after washing, but to use it to extend a wash another day or two would really be cutting it close. I use it in conjunction with a hair powder, in that I put a hair powder in at night, let it soak in overnight and then use this throughout the next day or 2 to refresh my hair. Using it for solely that purpose, I think it does a great job.