Blondes need to use clarifying shampoo more often. If you have chemically treated light hair, you need to use a clarifying shampoo more consistently. Dyed or highlighted hair—particularly bleached hair—becomes very porous, so it can easily absorb unwanted yellowish tones from the outside environment, like from hairspray, perspiration, city smog and even minerals from your shower water. Using a clarifying shampoo weekly will help dissolve product and natural buildup, neutralizing those unwanted tones.
Your hair doesn't get used to shampoo over time. If you notice your shampoo isn't working quite as well as it used to, don't toss the bottle. Your hair changes with the seasons, so that might account for a difference in texture. If you aren't rinsing thoroughly enough, there might be a buildup of product on your scalp. It has nothing to do with the shampoo not working for you anymore. You don't change your face cleanser, so why would you change your shampoo?
Even the fanciest shampoo can't permanently change your hair. Washing your hair with the right shampoo is like a great exercise program: As long as you do it you'll look good, but if you quit, three months later you're back to where you started.
Not all ingredients are created equally. Many shampoos contain foaming agents like ammonium lauryl sulfate, ammonium laureth sulfate or sodium lauryl sulfate, which are harsh and drying to the scalp. Sodium laureth sulfate is a gentler agent, as well as TEA lauryl or laureth sulfates, which are also goo