Shampoo is a hair care product that contains various ingredients, including detergents or cleansing agents, conditioners, thickeners, opacifiers, sequestering agents, preservatives, and fragrance. The most common detergents in shampoo are surfactants, which work by lifting impurities from the scalp to be washed away by water. Some shampoos also contain natural ingredients such as plant oils, organic green tea, aloe, chamomile, coconut oil, and essential oils, which are gentler on the hair and scalp. Positive effects of shampoo include deep cleaning, hydration, and improved hair manageability, while negative effects may include stripping the hair cuticles and causing damage to the hair. Some ingredients, such as parabens, have been linked to health concerns, but most shampoos use similar ingredients to form the basis of their product. It is important to read the label and understand the ingredients to choose the best shampoo for your hair type and needs.