Shampoo is the cornerstone of haircare, embodying its essential purpose: to cleanse both hair and scalp. Our scalps naturally produce sebum, a protective fat from the sebaceous glands, which can lead to an oily and unkempt appearance when left unwashed. Daily life introduces dust, environmental pollutants, and even tiny particles of keratin that cling to our hair. To maintain its cleanliness and vibrancy, regular washing becomes essential. Since the dirt on our hair is oily and insoluble in water, simply rinsing with water isn’t enough; we need a powerful ally to wash away the impurities. Shampoo achieves this by encompassing and trapping fats (oils) while lowering surface tension, allowing these oils to be effortlessly rinsed away. This remarkable process relies on the magic of surfactants. This book presents straightforward, solid shampoo bar recipes that are easy to recreate, along with two delightful "melt and pour base" recipes to inspire your haircare journey.