Tell me you don't know what science is without telling me you don't know what science is. The examples you cited aren't science, they're marketing.
The problem isn't with science, the problem is with people like you who don't know science from BS, and with marketing departments who use "here comes the science" advertising to exploit people like you who don't know science from BS. If you educate yourself properly, not only will you be wiser, you'll also be richer as these guys won't have such an easy time emptying your wallet.
Also, just in case you didn't know, shampoo doesn't turn your hair into strands of steel or silk. It's just shampoo.