How much shampoo should I actually use when washing my hair? It seems like a straightforward query, yet the answer often eludes many of us. Are we pouring a dollop that could easily rival the size of a tennis ball, or merely a pea-sized amount? It is perplexing—is there a scientifically backed optimal quantity that not only ensures cleanliness but also promotes the health and vitality of our tresses? What about those who have thick, curly locks compared to someone with fine, straight hair? Does the type of shampoo matter—should I use more if my product is sulfate-free or less if I’m using something concentrated? And what about the frequency of washing? Could overusing shampoo lead to adverse effects, stripping our scalp of its natural oils? Or conversely, could skimping on this cleansing agent result in buildup? So many variables to consider! What’s the golden rule? Am I getting it right?