En español | Do you ever wonder why someone would pay $30 for shampoo when they could buy a drugstore/supermarket brand for $5? Costly hair products are harder to ignore now that mass retailers like Walgreens, CVS and Walmart stock them online along with low-cost ones. Prices are inching up as new technology and trends develop. So, can low-cost hair products keep up? You're in for a surprise. Not only can inexpensive shampoos, conditioners and stylers compare, but they often surpass pricey brands in innovation. Here are 10 not-to-miss categories for you.