If you’ve been doing your own hair for a while, you’ve probably encountered shampoo bars before. And while they are not as popular as liquid shampoos, people have really begun to notice them over the recent years. Since they can’t leak/spill and aren’t regulated by travel bodies like TSA, these shampoos are particularly loved by people who travel a lot. But this is not the only thing that makes them stand out. In fact, here are some major differences between shampoo bars and liquid shampoos: