Sometimes, it will not go as how you want it. You are already doing what's best for your hair by keeping it clean all the time, if it is still as dull or dry and you already tried all the shampoo and conditioners in the market, I would say just relax and calm down. Sometimes the place where you live is a contributor, the dryness of the climate, the hard water, the nature, the food that you eat, your health, they all contribute to what we all have outside our body. Commercials are just commercials, they work for some and not for some but they have to generally tell the public that their product works, because we all are consumer or buyers or users. So, just enjoy and don't abuse your hair by putting too many stuff in/on it. Remember that you have other parts of your body that you need to take care of. All the chemicals that you pour up there are being received down there too and inside there. I hope you get what I mean. Read the labels of everything you buy, some say this could cause "cancer". That's what I'm trying to impart.