Shampoo Bars (Solid Shampoo) 1. Definition Shampoo bars, also called solid shampoos, are a concentrated, solid form of shampoo that cleanses the hair and scalp without the need for traditional liquid formulations.They are typically eco-friendly, travel-friendly, and plastic-free, often made with natural surfactants, oils, and botanical ingredients. 2. Key Properties Solid Form: Comes in bar […]
