Dollar stores offer great options for many more expense items, but shampoo isn’t one of them. Much like cheap makeup, shampoo requires using the right, high quality ingredients. When companies skip out on using the best materials for their products, consumers run the risk of having an adverse reaction to it upon use. Cheap shampoos can leave extremely harsh chemicals on your scalp and have even been linked to hair loss. It’s much better to take care of your hair and body with the more expensive brands you can trust.