In the sequence of hair washing, shampooing precedes conditioning. Shampoo is designed to cleanse the hair and scalp of dirt, oil, and product buildup using surfactants. It typically contains ingredients that remove impurities and excess oils. Conditioner, on the other hand, is formulated to moisturize, soften, and nourish the hair. It seals in moisture, reduces frizz, and makes hair more manageable. Therefore, shampooing first is necessary to prepare the hair for the conditioning treatment, allowing it to effectively penetrate and repair damaged hair cuticles.
