Definition & Meaning of "shampoo bar"

What is a "shampoo bar"?

A shampoo bar is a solid form of shampoo that resembles a bar of soap. It is designed to cleanse the hair by producing a lather when rubbed directly onto wet hair or by using hands to create foam. Shampoo bars are often made with gentle ingredients and can be formulated to address specific hair types or concerns. They are a popular eco-friendly alternative to traditional liquid shampoos, as they typically come in minimal or plastic-free packaging and are long-lasting.