Why does my scalp feel itchy and sore after using a new hair shampoo?
1. Introduction An itchy and sore scalp after using a new shampoo is usually the result of acute contact dermatitis, a localized inflammatory response caused by the chemical ingredients within the product. Modern shampoos are complex chemical formulations containing strong cleansing agents, synthetic fragrances, and robust preservatives. When introduced to the delicate skin of the … Read more